Labelles will have "Labelle Industries" stamped into the floorplate.

They are Labelle teflon coated magazines.

http://www.ar15.com/forums/topic.html?b=1&f=5&t=758996&page=1

Thanks for the replies.   I did not know that the part number on the magazine was a Shomer-Tec part number.

I guess they just came with really soft floorplates.  They are softer than a comparable "colt" branded floorplate.   I have had no issues thus far so I gather they are just unmarked Labelle magazines.   After all, that is what I was told I was buying back in 1994, pre-ban Labelle Magazines.

Thanks again.

If you want to obtain spare floorplates, contact CProducts magazines as they sell them.

All my Labelle prebans had thin soft floorplates.  But they are excellent mags.  I sold them to NY'ers for the cost of new Okays.  Helping out the brotherhood.