I recently purchased this oil painting on canvas at an auction. The signature says "Blackwell ' 73" . There appear to be parentheses around the signature. The painting is 24"x36". The frame on the back says "Universal Art - Antioch CA" I don't think it is a Tom Blackwell, but rather another blackwell. ANybody have any ideas? Thanks!

Xavier

Here are images:
http://images3a.snapfish.com/232323232%7Ffp73433%3Enu%3D8448%3E478%3E25%3A%3EWS NRCG%3D355372486534%3Bnu0mrj

http://images5a.snapfish.com/232323232%7Ffp63549%3Enu%3D8448%3E478%3E25%3A%3EWS NRCG%3D355372486734%3Bnu0mrj