Original U.S. WWII Anti Aircraft Shot Down Award Certificate - 473rd AAA AW Battalion (SP) U.S. Flare Guns The reverse ricasso is also

The reverse ricasso is also stamped with an RZM circle

The fuze unscrews from the grenade

most likely due to sharpening after the blade was engraved

as it has steel triangular "A" washers

W Greener in his 1871 book Modern Breechloaders: Sporting and Military (page 214):

Original U.S. WWII Anti Aircraft Shot Down Award Certificate - 473rd AAA AW Battalion (SP) U.S. Flare Guns The reverse ricasso is alsoOriginal Item: One of a kind. The is an award certificate given to Battery B 473rd Anti Aircraft Automatic Weapon Battalion Mobile for successfully shooting down a German Messerschmitt Me 210 during World War Two. It is framed and measures 12" x 9". HEADQUARTERS NINTH U. S. ARMY AWARD OF CAT I CLAIM THIS IS TO CERTIFY THAT: Btry B 473rd AAA AW Bn (SP) SHOT DOWN ONE Me 210 at K 7905770 near Herlenn, Holland 1181310A December 1944. J. G. MURPHY COLONEL,