Ball/bullet mold identification

[MeliusCreekTrapper]

I have a few older molds that I am looking for some information on. Three of the molds are aluminum or a similar alloy, very lightweight. The wood handled mold is definitely brass. I do not have a calipers to measure the diameters, and I hate to run a few balls through what seem like brand new molds to find out, but will if I have to. Any info would be appreciated.

Brass mold, stamped 1425:






Alloy round ball mold, 45caliber-ish?, stamped 236







"54 cal" mold





"50 cal" mold