Compared to the 3 I just received and cleaned the middle one with the 2 rivets appears to be the correct one.

CU barrel code too.

Received 2 folders and 1 fixed 10-24.

Folder #1
SN S639XXXV
Barrel Code D W
Appears unfired, factory grease apparent on bolt, carrier, receiver and barrel extension.
Bolt face shows no evidence of being fired
Bore immaculate, no evidence of firing, factory hone marks still clearly visible.
Minor ding at muzzle, Screwheads on bayonet adapter show use of incorrect screwdriver but not horribly mangled.
Minor finish wear on muzzle end of bayonet mount.
No notable scratches, wear or other indicators of use to receiver, both sling swivels present.
Overfolder is perfect, grip shows no evidence of uses, smooth areas still show as molded shine, checkering perfect with no damage.
Action is smooth as silk, locks up tight.

Folder #2
SN S634XXXV
Barrel Code D W
Shows some internal evidence of being fired but not too much, minor primer marks on breechface of bolt, bolt carrier shows travel path of bolt but no wear, locking recess on barrel extension shows bolt travel, some deposition in barrel but bore bright.
Action bars show evidence of cycling.
Finish is 95%+, no wear or scratches evident on receiver.
Forearm has a couple of very minor scrapes but otherwise perfect.
Both sling swivels present.
Overfolder is perfect, grip shows no evidence of uses, smooth areas still show as molded shine, checkering perfect with no damage.
White label with "26" on rear top of receiver.

Fixed
SN S377XXXV
Barrel Code DW
The party that ordered this one won the lottery.
Shotgun is unfired, substantial evidence of factory grease in action.
No marking of bolt face, bore looks new with factory hone marks clearly visible*
Very light evidence of cycling on action bars.
Finish shows as new with zero scratches & wear marks.
Forearm is perfect, 2 minor dings on buttstock with "49" Sharpied on comb of buttstock at heel.
Smooth action.
*Bore had factory grease residue as did the barrel under the bayonet mount.

All were completely disassembled, cleaned in ultrasonic tank and scrubbed with a 1" paintbrush with ATF on it. All showed a light rust brown tinge to the ATF, unknown if this was just minor accumulated rust on surfaces or sluffing off of blueing residue.

The fixed stock is the queen of the bunch, as stated it would easily pass for NIB. Folder #2 had the best finish but also showed the most evidence of having been fired. Folder #1 while clearly unfired showed the most handling wear.
None had any notable rust spots or wear.
Incredibly nice shotguns, especially considering what you DIDN'T pay for.

Sincerest thanks to the OP for the heads up on these, great way to get a hold of a truly collectible piece.

My folder came in today.  Mixture of good and bad news

Good news is that it looks unfired, no scratches in wood or metal other than the mag extension nut.

Serial number is S635711V
barrel code RDWK


The bad news is the magazine extension barrel nut was scarred up by what appears to be lock wrench marks, and the magazine follower was missing.
The magazine spring was stuck in the receiver.

I ended up buying a rather expensive metal military follower off of ebay to fix the problem.  Still a hell of a deal for the price.

Sorry for the crappy photos, but the camera is dying.
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Got a fixed stock.
SN:  S3805xxV
Barrel Code CU

S377688V
It's been loved, but not too bad.
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Fixed, S37972-V, CU Bbl, faint Rack#42 sharpied on heel, came with black nylon silent sling

S/N S393522V fixed stock Attached File

Folding stock serial # S635741V

Fixed stock serial # S394910V

@Dace

Thanks!

I got the rug from Overstock for $120, was supposed to be temporary but I liked it so much it stayed

Folder received 10/25/18

Serial # S639084V
Barrel  Keyhole mark D W Q  the "Q" is larger than the D W

Came with state property card marked 8ST19A101750 on the back, Inspected Dec 20th 2011

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Appears to have been fired very little

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So, I tried to load this thing up, and it wouldn't take more than 4 shells, it felt as though it was binding up. I get it apart and find this.

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Terrible cell phone pictures but will have to do since it's raining out.
SN # S377830V fixed, no sling.
Shows some use with scratches and some dings but nice overall, no rust and nothing buggered up.
Had an inspection tag on the sling swivel.

Just field stripped my fixed stock and cleaned it up. The barrel was not drilled for a bead. Removing the bayo adapter revealed a coat of cosmoline underneath it. The bore was perfect and shiny, and there was minimal crud in the action. Mine was probably fired only a few times.

There are two being sold on Gunbroker right now.  These are not mine and am only posting because these serial numbers have not been added to the current list.

Fixed S377847V CU
Fixed S377873V CU

Pretty beat up fixed stock.

S3955XXV

I'm sure someone will take it off your hands if you don't want it.

Fixed, S394530V, KU
Folder, S637324V, DW
Folder, S639082V, DW

Updated. Let me know if I missed anything above this post.

Uploading pictures of my folder.  The brass tag looks similar to the tag in the  of the original listing.  The outside has quite a bit of wear but the internals look unfired after being wiped down.

Fixed SN S380555V, CU  #59 in sharpie on the stock

Cleaned up nice!

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Picked my 2 fixed stocks up today, serials as follows for the list :

S392772V.

KU

S375984V.

CU

Damn, one of the GunBroker models is sequential sn# to the one I got. Damn. Damn. Damn :-(

Once in a lifetime to have a sequential pair

Ugh. Oh well, at least I'm not a collector. I'm happy for the one I have. Still, knowing there's two that could be paired..just seems like it should be. Probably many sequentials in this collection, I'll let someone with more resources make that happen.

Got my folder in yesterday.  Overall in very good condition, minor wear on forearm, some scratches on receiver.  Bolt and barrel look pristine, very happy with the shotgun.  Mine came with a black sling, no rack numbers or other markings besides factory identifying marks.

Serial number S639109V

DW barrel mark

Picked up my 2 fixed and am very happy.  One is 90-95% with some small handling/rack marks and the other is very well used but honest wear with a lot of character and patina.  No bubba'd screws or extenstion nut.  Last night I broke down the well used one and cleaned it inside and out.  There was some rusting inside the receiver and shell tube but that cleaned up easily with some 0000 steel wool and Remington Oil.  The gun just had years of honest wear on it but I suspect whoever was issued this gun did their best to keep it up.  Only a full breakdown showed some rust and grit on the internals.  It has the been there, done that look and cycles like butter now.  I was going to keep them both but my 78 year old father saw them and his eyes lit up.  He offered to buy one for double what I paid.  I told him to keep his money and choose whichever one he wants.  I haven't seen him get excited about a gun in years.  That alone is worth its weight in gold.  I will update with the barrel info later but for now, here is the serial info.

S393555V Fixed CU
S378494V Fixed KU

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The part about your father made this the best post in the entire thread .

Folder, very nice condition.

Missing one of the snap-rings holding the butt of the stock on. Already have a replacement.

Very happy with the purchase. Really should have bought two.

SN# S636496V

Left Side Of Bbl:



Right Side Of Bbl:



Folded:



Extended:

cross posted from the original thread

I got a chance to clean mine up at work today. I received two fixed, SN S377845V (CU) and S394493V (KU).

SN S377845, marked 5 at base of stock in black sharpie, had no sight hole drilled in the barrel, a plastic follower and the barrel is MOD
SN S394493V, marked 69 at base of stock in black sharpie, does have a hole drilled in the barrel, a metal follower and the barrel is CYL.

I soaked them both in CLP for a day then Blaster for another day. It still took some heat from a heat gun to get the mag tube nuts off. I used thick leather and some channel locks. They were still tight as hell.

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Received my folder S630220V (DW) and my fixed is S394527V (KU).  Folder is in great shape, barely used and the fixed has been thrown down the driveway before.

Folding







Fixed

Picked up my folder last night, almost perfect condition, I doubt it's been fired much if at all. S635721V, barrel DW

@APEMANWITHFERALDOG

Sure its a MOD barrel? everything so far I have seen is cyl.

Updated list, if your serial number is not there and you are above this post let me know.

I am also adding special details about individual shotguns.

Im pretty sure.
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Neat!

Fixed
Ser S378517V
CU date code
Sharpie rack code 51 on stock
Overall great shape came with a black silent sling

I received my woody yesterday.  It's in pretty good shape.  I'm in the process of cleaning it really good.  I got a bunch of tape and adhesive residue off the stock, and it looks a lot better.

S/n S394488V
Barrel code:  KU

S381xxxV
Barrel code CU
Fixed stock.
Nice shape overall some dings, some wear, bolt face looks clean enough to be unfired. Think it just looks like carry-wear. Has #10 on top front of butt stock #46 top rear in sharpie.

Folding stock In 95% condition few small marks next to take down pins on ejection port side and a few small dings in the forearm.  Barrel is not drilled for front sight.
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SN S379160V, fixed stock, barrel is a CYL and marked "CU" base of stock has 41 marked in black sharpie, a round tag has 29 written on it, barrel is drilled for a front sight, and has a metal follower.

It has some wear and tear, appears to be carried some and never shot, internals are brand new. You can see on the receiver where it was scratched from walking with it slung. It was obviously used in hurricane Katrina to put down the insurrection lol. Broke it down and cleaned it, lots of grime and old grease, soaked the metal down in CLP and rubbed a light coat of linseed oil on the wood. Looks much better now but still has character.

Picked up my fixed-stock today!  A few dings but overall very good condition.
Barrel stamped CU (Apr '71)
Serial#  S378495V

::haven't figured out how to add photos yet::

Mine looks like the first one.

Both of my folders have the middle one while the fixed has the left one.

2nd fixed

S379739V
CU

Fixed
Serial: S379161V
Barrel code: DW

Shows moderate wear, appears 100% original/correct/serviceable, metal mag follower, barrel drilled for bead sight, no sling, tags or other extras came with it, Sharpie rack number on buttstock: 68

Edit to add: Flaregun, mine is consecutive (serial) to yours

Fixed stock
Rack #40
Barrel Code CU -April 71, I was two years old.
Serial # S38055xV

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I was -12.  My parents hadn't both even graduated from high school yet

@-db-
You have a barrel off a 1972 folder on that.

Got 3.  All came with black nylon slings.

Folder:
Serial Number: S636461V
Barrel Code: D W K
Like new.  Perfect.

Fixed #1:
Serial Number: S379175V
Barrel Code: C U
Rack Number: 69

Fixed #2:
Serial Number: S381900V
Barrel Code: C U
Rack Number: 56

Got the fixed stocks apart and cleaned up today.  Both had a little handling wear but nothing major.  No damage from Private Snuffy taking a wrong tool to them.  Neither appeared to have been fired.  Looked like factory oil inside and some heavy oil / cosmoline under the bayo adapter.  Very clean internally with no wear.  Both barrels are drilled for front sights.

Well, barrels are a very easy swap on 870s, so it's no surprise some mixing and matching occurred at ONG armories. I suspect that many of the more used of these guns have swapped barrels.