Original 1st printing 13&3/4 x 21" concert poster for ex-Lovin' Spoonful leader John Sebastian appearing with Poco on 4/12/1970 and Frank Zappa (and the Hot Rats) appearing with Boz Scaggs on 4/19/1970, both shows promoted by Bill Graham Presents and held at the Berkeley Community Theatre in Berkeley, CA.

 Medium-thick semi-gloss coated index stock poster is in good/decent (B/B- to B-) condition; the poster is mostly in pretty nice shape, with the exception of an approximately 6 x 3" semi-circle of discoloration (a light yellow stain) along the lower left margin, a 1&1/2 x 2" area of similar staining in the upper left corner/margin and a 1/2" diagonal bend and pin-prick age spot in the lower left corner tip, otherwise OK. 

 Cool lineup on this one!