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1/9/2014 5:04:24 PM EDT
Dino, CJ and others,

All silver tube, only numbers on it:

KM 272692-31

What do you know?
1/9/2014 6:01:25 PM EDT
[#1]
Pic of tube ? Those numbers are for the power supply. Off hand I can tell you it is a older ITT tube and not gated. I can search using the power supply numbers but a pic of the tube would be quicker if you have one.

ETA: Almost all metal cased tubes (I say almost because there is always an oddball) are milspec anvis tubes (MX-10160 tubes). Envis tubes were also metal cased but were not milspec. The common denominator here is they were all Air Force tubes. Metal cased tubes are EMP shielded and it was a requirement for the Air Force.

Yout tube is most likely milspec and someone either removed the label or it was from a Envis scope. Nice tube but not autogated or thin filmed. Not a big deal as some (myself) like those thick filmed tubes. Tough as nails and they don't take any crap from high recoil weapons.
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