Original 1st printing 5&1/2 x 8&3/8" concert handbill for Mountain appearing with Fleetwood Mac and Zephyr (with Tommy Bolin) at the Swing Auditorium in San Bernadino, CA on 8/12/1970.

 Designer unknown/not credited, thin flat stock handbill is in good/decent (B/B-) condition; there is a bit of uneven paper toning/mild discoloration, along with a series of tiny pin-prick spots in the lower left corner and along the upper left margin, a bit of pen scratch ("1970" in blue ballpoint right under "August 12th"), a tiny tear in the upper left margin and a few light handling creases/dings here and there, otherwise OK.

 Fairly simple, but very cool (and uncommon) mid-1970 multi-act concert handbill from the Swing.