Ceramic Chairman Mao Badge Pin Lot Dated 1968 Chinese Cultural Revolution Rare

Description

Three uniformed Chairman Mao wearing the same hat ceramic badges
Rare version with a smiling Mao facing forward and slightly to the right.
Young Mao image is almost monochrome.
Older Mao looking thoughtfully left.
Would have been worn during the cultural revolution
See photos for measurements in inches and centimeters.
Has red Chinese characters on the back as well as two are dated 1968
Original metal pins are missing.