This square button was released in 1979 to promote the Mickey Mouse Disco music album released by Disneyland Records. The button features the same artwork as the album cover with Mickey and Minnie on a Disco dance floor in a club. The top left corner reads "Walt Disney Productions". The bottom edge of the bottom reads (c)1979 Walt Disney Productions MFG by H.A.S. Novelties LTD. Toronto:863-1190 Button is 2-1/8" wide and 2-1/8" tall.