https://www.invaluable.com/artist/yellowhair-jimmy-b9kncbhzvs/sold-at-auction-prices/
This may be father & son !! Did not look for the history and am not a member so have no idea of selling price !! You will need to keep in mind that due to its small size and if it is a print rather than an original may not be worth much !! You will need to match the signature !! If done in 1947 then it would be the elder artist,, Robert !!