Original U.S. WWII Manhattan Project A Bomb Workers Pin - Sterling Silver Technical Books system patented in 1823 by

system patented in 1823 by JOHN DAY

in that it has a

A great chance to pick up a very attractive MP40 display gun

the rifle is just great

and another tiny one at the front of the lock plate

Original U.S. WWII Manhattan Project A Bomb Workers Pin - Sterling Silver Technical Books system patented in 1823 byOriginal item: Only One Available. This is a genuine sterling silver MANHATTAN PROJECT pin that was given to the workers who spent for more than one year on the project. The pin is in very good condition with working pin and catch. It is nicely marked on the reverse with maker Whitehead Hoag and Sterling. Pin measures 11 16 of inch round. It comes in a small display box, but we do not know if this an original box, or just one used to store it. The