Original 1st printing 5&5/8 x 8&5/8" blank-reverse concert handbill for Led Zeppelin and Jethro Tull appearing together at the Swing Auditorium in San Bernadino, CA on 8/8/1969.

 Art by Sokolis, thin flat stock poster is in good/decent (B/B-) condition; there is a tiny cluster of black enamel ink spots in the white border just above the first "e" in "Zeppelin", along with a tiny puncture hole at about 4:00 on the central image, a few pin-prick indentations and a stray spot/handling crease or two hiding within the image area and a hint of edge handling, otherwise it is a very presentable example of this fairly uncommon mid-1969 Zeppelin/Tull concert artifact from a VERY early Southern California appearance. 

Check out the Zeppelin set HERE:

https://www.youtube.com/watch?v=a14EXLG1GiM