I'm sure you've seen the photo, now you can bid on the bag. Legendary Auctions has Jackie Robinson's equipment bag that was once used by him during his playing days. It has also been purported to be the bag he held in the below famous photo of him as he leaves the Dodger clubhouse for good.
I know it's hard to tell, but this looks like the same bag. Look at the blow-up below. You can faintly see the marking of Jackie's #42 and the Dodger script below it.
Anyway, this is a great vintage item that belongs in some museum somewhere. Maybe some benefactor will take it home and put it in a Dodger exhibit so that we can all enjoy it.