Need Help to ID British Markings on a AO M1

[MG Dave]

Its a AO M1 probably made late 42. Looks all original other than maybe a replaced bbl. I was taking pics when I noticed small stampings. Used my borescope to see what looks like British Crown stampings. One on the right side of bolt and the other on the upper front right side of receiver close to the bbl, just forward of ejection port. I had other M1's that I used as shooters and this really hasn't been out in over 25 yrs. That's why it's just being noticed. Any ideas of what the British stamps are ?

[MG Dave]

[Got Uzi]

Look like British Proof marks

[klocker]

It does indeed looks like a British "2nd proof" proofmark from the London proofhouse. Got any other weird non-Thompson markings on the gun?

 

http://firearmdealersonline.com/firear7.gif

Edited January 4, 2022 by klocker

[Got Uzi]

If the barrel were original it would be marked with 7 tons

[rpbcps]

If the barrel were original it would be marked with 7 tons

example of British barrel marking and from same example, the proof marking for the conversion to semi auto on the receiver.

 

 

This example was converted to a semi auto only, when civilians were trusted to own semi auto Thompsons in the UK, it has since been deactivated in 1990, once the firearms laws changed.

I have not seen any British markings on a bolt before, not to say they don't exist though. Below is a sheet I have on file with some more British stamps.

Here is an example of an Enfield marking on a ‘Tommy Gun’ marked Savage US Model of 1928 A1 which, according to what I learned from Tom Davis's book 'Great Britain - The Tommy Gun Story', would have been part of the British War offices 5th consignment of Thompsons, and the first batch of lend lease US 1928 A1’s, to be shipped to Britain in 1941.

[MG Dave]

Those are the only non US stampings. Thats it, the 2nd Proof, the one with the 'CP' under the Crown. The Right picture I posted is of the bolt. Shows a shadow because i was too lazy to remove the bolt from receive to take the pic w/borescope. Ive seen the 'tons' markings on other 28's bbls and thats mostly why I think the barrel has been changed.

 

Left picture has the same British 2nd Proof mark on the upper right side of the receiver foward of the ejection area.

 

I've had other M1's that I used as my shooter guns. This M1 has truly sat in the safe for over 25 years. Don't think I ever noticed the two British stamp, even with the younger eyes yrs ago. Even with my reading glasses the mark almost looked like scratch or something.

 

This ones is going to be put up for sale and that's the reason I noticed the small markings when taking the pics. Thought it was a British Proof but didnt know any more that till now. Thanks guys to all who replied. Now I know.

 

Thanks again, Dave

[AlanDavid]

rpbsps

 

The scan is actually from a photocopy I took of a list of examiners markings in the old Patter Room Collection Library , some years ago.

It was dated 1st September 1939.

 

The same list is existent in the collection but dated 1918, so obviously a lot of the markings and stamps did not change that much between the wars.

 

Regards

 

Alan