Frank Robinson's 1970 Kellogg's Card Is A Challenge to Find in Nice Shape

On this day in 1981 Frank Robinson was named as manager of the Giants.  He became the first black manager signed by the NL after accomplishing this in the AL in Cleveland.

Robinson was also the first person to win the MVP Award in both leagues.  Has anyone else even done that?

Like a lot of Kellogg's cards, the 1970 Frank Robinson card looks great when the color is vivid and there are few cracks.  The version shown above  is one of the proof cards that I didn't get last year.

There is a group of 1970 cards that seem to be in shorter supply.  I haven't seen any comments about how/why that occurred but it seems that those numbered between 15 and 30 are the cards being discussed as in shorter supply.  If you have more information on that let me know.