This is not a dug item, but figured I would give it a shot at finding organization it represents. it appears letters are TMCS, not sure of order. Buckle is from Massachusetts. Thanks in advance.
What does the attachment on the back look like?
That will help us give a baseline for the date of manufacture.
"The history of the Massachusetts Bay Transportation Authority (MBTA) and its predecessors spans two centuries, starting with one of the oldest railroads in the United States. Development of mass transportation both followed existing economic and population patterns and helped shape those patterns. Mass transit in Boston, Massachusetts began as a family-owned and operated ferry in around 1630. Ground transportation started in Boston with a private stagecoach operation in 1793. The first rail line, which was horse-powered, began on March 26, 1856. Soon there were more than twenty privately run rail lines. In order to regulate fares and reduce competition, the General Court of Massachusetts passed the West End Consolidation Act to consolidate the rail line operations."
Dave