This vintage Christmas  features a sweet little mouse holding a large gold jingle bell. The mouse wears a red Santa hat and a red and green striped shirt. 

The back of the pin is marked "Hallmark Cards, Inc."

This pin is available in two different colors, beige or blue. It's not clear whether Hallmark made two color variations or whether the beige mouse was originally blue but has faded.

Measurements:

Height: 1 1/2 in. (3.8 cm)
Width: 1 3/4 in. (4.4 cm)
Thickness: 1/4 in. (6 mm)