Could have swore I asked this before, but the search pulls up nada. I have a 105mm APDS-T and the only stenciling is 105mm TK over APDS SX 389 GF over T. Lot 196 (arrow??) over SUB LOT C. 70 over GD6/71. Stamping is APDS 105MM SX137GE over RLB 3-69 over SX 620. I am assuming that this is a M392 vs. the M728, or is it strictly British for the L7 gun?