The photo SDS used for the Mays Conquest Map is here: https://www.sportscollectorsdaily.com/rmy-auction-opens-mays-minor-league-photo/
It's a photo from 1951 when Mays was still on the Minneapolis Millers.
He ended up winning ROY that year, so my guess is the ultimate Conquest reward will be an 82 Hardware Mays.
(Mays had a 4.0 WAR in 1951. In 2019, the following players had a 4.0 WAR: Merrifield, Gardner, Seager, Anderson, Villar, Garver, Kepler)