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I have a 20mm projectile in an unheadstamped Hispano case. The projectile seems to be solid, and the base is stamped JMB.
Can anyone tell me who JMB is, please? Presumably a WW2 manufacturer.
I was not sure if the projectile was British, as its length (71mm) is shorter than "our" projectiles. This one has a sharp pointed tip, and is painted black with a blue band just below the ogive. Weight is 137 grams. I suspect it may be a trial core for AP tests, although it does not have the notches to fix the cap that was used on the Mk.II AP.
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