This mould came with my RCBS. It's an old Ideal mould in a box marked Lyman Gun Sight Corporation. The numbers stamped on the mould do not match the ones on the box. It has 4 different cavities as follows:
358495
311419
225438
22445
I would like any information on this mould as I can't find anything online and the cavity mix seems odd to me. Is this a custom mould? How would I price a custom made mould like this for sale if it is one? I'm going to cast with it this fall and winter and probably let it go but have no idea where to start on something I can find no info on. Would an auction be the best bet?