REAGAN again (1970 gubernatorial)

Pinback button promoting Ronald Reagan for governor (California), 1970. Extremely rare 1" cello in excellent condition - the first example we've ever seen. The original owner picked this up in southern California during the 1970 campaign - we guarantee it's from the 1970 governor's race (NOT from 1984). The back is stamped B.B. CO. ROCH. N.Y. (Bastian Bros. Co., Rochester).