Grumman Goose G-21A N20650 sn1020

Info on Photo back:

Grumman G-21A
NC 20650 - 2 P&W Wasp Jr SB-400
Thunderbird insig
Oakland,CA: 1939
Frank Fuller Feb 1941
Wm T. Larkins via J.P. Juptner Aug 1974

registration info from Aerofiles -> PP-XAN -> TF-RVA -> N1503V