Help with Thompason Magazine

[mwrookie]

So in my friends collection we cam across a Thompson magazine that has no markings. Does anyone know a way to ID it?

Information

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[browningautorifle]

Could be an original Colt no marking or an MSCo which is marked on the inside of the rear spine at the bottom. You'd need to strip it to see. The lips show a long life and have been tampered with...

[RCS]

had a friend check his Thompson book by Tracy Hill, he found the following 1) there are some early Colt 20rd unmarked 2) Some Sparks-Whittington 20rd were not marked 3) 4th production of USCO 20rd
magazines not marked.

Also there is an unmarked 20rd Japanese made magazine for a non gun which appears to be a very close copy and will fool you

[mwrookie]

Thanks for the help guys. I am not a thompson guy and my friend does not want me to risk taking the magazine apart and damaging it because he is looking to sell them.
aside for this 20rd he has the following that are marked 3) SWCO, 4) Seymour Products 1) Auto Ord (appears to be a early version, he thought WWII era, 1) Sealed that is wrapped in VCI with barley readable writing. Can you recommend a source to get a fair vale?

[browningautorifle]

Stripping the mag won't damage it, just lift the tail with a screwdriver and it slides out... Check the gun sales forums for prices...like http://www.joesalter.com/listings.ph...II%20Militaria Hayes Otoupalik https://www.gunbroker.com/ https://dealernfa.com/ Accessories, Parts Sniper Stuff Catalog Machineguns for sale - machineguncentral.com full auto NFA firearms


That should give you some reading...prices vary by area...

[mwrookie]

Thanks Browning. I was unable to find any markings inside the body. Anything particular I should be looking for?

[browningautorifle]

There may or may not be a marking inside the bottom back of the spine. The bottom retainer lips are bent out at the front, they should be uniform. That mag has seen lots of use. I wonder if it's an early original, not marked at all? They didn't mark them at the beginning as they were the only ones making mags for their own gun...Colt...

[mwrookie]

There may or may not be a marking inside the bottom back of the spine. The bottom retainer lips are bent out at the front, they should be uniform. That mag has seen lots of use. I wonder if it's an early original, not marked at all? They didn't mark them at the beginning as they were the only ones making mags for their own gun...Colt...

Due to no markings and condition what would be the best way to come up with a value?

[rayg]

The photos don't show the hole on the back of the mag but if it it not round but slightly oval, it is a repro Japanese made mag I believe for the repro Thompson they made, Ray

[mwrookie]

back hole...