Posted By:
davidcyclebackConsidering it could be a high school or other jersey, I would think you'd want to start by find a photo match of the style. If the you find a style match, could can then work from there. If you never find a style match, that might be your right there. I'm sure there are books on the Rainiers baeball.
When people don't respond to a post, that usually means no one has an answer or good speculation. I have no idea what team the jersey belongs to, so didn't post to express my ignorance.
I'm no PCL or game used expert, but did once have a 1930s Pro Model Portland PCL baseball cap from the Estate Auction of Babe Herman. Herman played for the 1930s Hollywood Stars, not the Portland Beavers, but his collection included game caps from fellow players.