Without some sort of Provenance to a player I don't see how that can be positively identified as a baseball glove. Especially since it's for the right hand, so most likely a lefthanded player.
Cycling gloves were just like that for years, and versions that are similar are still made.
Here's a pic from probably the 1950's both the guys on the right and left are wearing similar open back gloves.
Steve B
