Thanks Rhett! Because of Rhett I had an idea what to google for (my google wishes came true!), and I was able to find this Heritage Auction listing on the web, just like what Rhett mentioned:
https://sports.ha.com/itm/baseball-c.../50007-80340.s
And below is a picture of them from the lot, with my Mitchell and Allen second from right on bottom two rows, just in a whole lot nicer shape.
Thanks Net54 and members like Rhett that share their knowledge.
Brian