For Sale is a Lot of two (2) The Sons 1970 Appearing Production Concert Tickets (numbers  2771 & 2869).  Original First Printings, not a reproduction.   Concert Featuring: The Sons (Of Champlin), AUM, Joy of Cooking. Concert Date: Saturday Evening, February 21,1970.   Venue: Contra Costa Fairgrounds, California. Tickets measures: approx. 1 3/4" x 5". The tickets are very clean and unused, and graded MINT condition. View the images provided.