Just the title is enough to capture the epicness of this steel history!

See the U.S.A. stamped on the pen knife tang? That stands for United States Army.  The other stamping on the main blade indicates, obvoulsy that it was made in Prov. R.I. which finds its home in the United States of America, so there would be no need to stamp U.S.A. on it as seen by other non-Army Imperial knives.

 

As you can see by this chart, the stamping places manufacturing somewhere between 1936 – 1952 and more precisely somewhere during WWII (mid 1940's):

The spirit and history of this knife reaches back to American manufacturing pride while war reigned as a black cloud over the world. 

Sahlute the steel spirit!!
Scott
 
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