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A military small & medium caliber ammunition collection
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Cartridge Details
20 x 110mm HS
United States
Details
Type
TP
Projectile
steel, black, 1 copper driving band
Projectile Markings:
(stamped) HWB-17 9-43
Case
steel, brown lacquered
Markings:
(black ink) PROCTOR 1943 20MM M21A1B1 LOT PS 135
Primer
none
Headstamp
[none]