November 9, 1967 was Procol Harum's first gig in San Francisco, and band member Gary Brooker later credited the Fillmore with "... the absolute making of our whole style." A mythological griffin and lion alluding to the band's British roots, engage in Kouninos' vertical design.
The postcard was printed once before the concert. It measures 4 1/2" x 6 3/4".
There were also some pre-concert double-sized mailers printed that were conjoined with the BG091 image (see BG091/092). They measure 4 1/2" x 14".