From early times Ideal and Lyman catalogs have listed some interesting molds. In the 45 caliber alone rifle molds who's numbers start with 456 and 457 show some really interesting designs. I have some of the more common ones and a few of the older and odd ones as well. I am not a collector exactly but I have accumulated some of the interesting ones as they presented themselves.
Most of the old designs are from the black powder cartridge era.
I thought I would post some just to see if there is interest in these.
Here is one that is not that old but somewhat rare. It is a Paul Matthews design.
The number is 457 676. On this mold the number is over-stamped and in more than one size making it look odd.The block number under the over-stamp is 429676. Lyman made three versions of this bullet/number and the design changed in each. This is the first of the three and is a nose-pour.
The target weight is 500 grains in 20-1