1.1 inch U.S. Navy shell marking

General Ammunition Discussion
#1

Today I acquired a 1.1 inch Navy anti-aircraft shell with the following markings:

B O
1942-6
lot no 754
1"10 MK I
75 CAL
U anchor S wn Can anybody tell me anything about this shell? Who made it?

#2

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From AMMUNITION FOR U. S. NAVY ANTI-AIRCRAFT MACHINE GUNS, SYNOPSIS OF DEVELOPMENTS DURING WORLD WAR II AND SUGGESTED FIELDS FOR FURTHER
IMPROVEMENTS. U.S. NAVAL PROVING GROUND DAHLGREN, VIRGINIA 1946

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Ordnance Pamphlet NO. 4, AMMUNITION Instructions For The Naval Service, May 1943

Tom,

I don’t know the manufacturer.

Brian

2 Likes
#3

Thank you Brian!

#4

Please, can you post a picture of the headstamp?

#5

Not that great of a picture. Just would like to know who manufactured it. The bottom of the shell is stamped B O Any idea? Thanks Tom

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#6

Tom, thanks a lot for the picture. It is a poorly headstamped “B. B. CO.”, so the manufacturer is Bridgeport Brass Company, Bridgeport, Conn.

Regards,

Fede

1 Like
#7

Thanks for the answer to my question Fede. Knew someone from the IAA Forum could help me!!! Tom

#8

Here’s a link to the first document Brian posted above (AMMUNITION FOR U. S. NAVY ANTI-AIRCRAFT MACHINE GUNS, SYNOPSIS OF DEVELOPMENTS DURING WORLD WAR II AND SUGGESTED FIELDS FOR FURTHER IMPROVEMENTS. U.S. NAVAL PROVING GROUND DAHLGREN, VIRGINIA 1946):

And a link to OP4:

Brian, thanks for your post. I wasn’t aware of the first document until now.

#9

Thank You Larry!!!