Hello all, wither once again! I don’t get on the PC much in the summer. I acquired an old home made cartridge board with some sectioned rounds. The thing looks like it spent the last 20 years in a dirty furnace room. It contained nothing rare or unusual. My question is I have a 37mm round [sectioned], the case length is a 142mm whit half a H/S which reads MM MK III A2 S.C. 1941, And around the primer M23A1 1941. I also have the projectile, which Im not sure is quite right as it is painted TP blue. I will attach a pic tomorrow.