Full/Complete set of (6) original 1st printing 23&1/8 x 29&1/8" untrimmed color test proof sheets for psychedelic megaliths Pink Floyd at the Oakland (CA) Coliseum on 5/9-10/1977. The show was produced by Bill Graham and features art by BGP in-house art team Randy Tuten and William "Daddy Bread" Bostedt" (both of whom have SIGNED each poster in the set). Six (6) piece set contains the following color combinations; cyan, magenta, black, magenta/yellow, cyan/magenta/yellow and full color. Medium-thick glossy-coated index proof set is in absolutely fantastic near mint to mint/near mint (A- to A/A-) condition; aside from the odd stray fingerprint or tiny corner ding on one or two sheets, the set as a whole is looks spectacular- an AWESOME set of proofs for one of the most popular mid-'70's BGP posters. Additionally as a note of provenance, this set originally came right from the personal archives of the late William Bostedt.