Original 1st printing 1&1/8 x 19" concert poster for Moby Grape, Lee Michaels, and Country Joe & The Fish, at the Avalon Ballroom in San Francisco, Ca, on 12/30-31/1966.
 
Art by Stanley Mouse and Alton Kelley.  Image is #41 in the FD Family Dog series.  
 
The poster is in vintage condition.  There are tackholes on all four sides, a rip near the top corner and bottom corner, a tear near the ticket strip a tear near the red flowers, and a few paper pulls on the back. There is also light smudging.  See photo.  The condition definitely reflects a poster that was put up to advertise a show in 1966.