It's a flame top '58 Historic reissue, owned by Greg Koch, AKA Gristleman (if you're familiar with the Fender Discussion Forum). He did the Vintage Amp CD for the Tom Wheeler book called 'The Soul of Tone- 60 Years of Fender Amplifiers'. The Tweed Bassman is mine and although the cabinet, speakers and hardware are riessue parts, the chassis is 1958 vintage and was used for the same Vintage Amps CD in the book. There are no photos of mine but that's basically because looking at it from the front or sides is like looking at a reissue model. The vintage tweed Bassman in the book is almost pristine.
The Black Face Twin Reverb and Super Reverb amps to the sides of my amp are also on the Vintage Amps CD.