iron, (maltese) cross

strange qestion for you mopar guys, I never noticed it when i dissasembled the engine but when i dropped in the refurbished cranshaft when building my short block i noticed a iron cross, or maltese cross stamped into one of the counter weights. I have heard of chrysler stamping an iron cross into some of thier hp motors(early 60's i think) like the max wedge, but i dont know. Anyoneone know what the deal with that is?

Oh and if it makes a difference, the engine i rebuilt never was a hp chrysler engine, it was just a standard 360 from a 1990 dodge pickup, might not have the origional crank though???