
Probably some sort of Tag for Chemistry Lab, Br=Bromine and Horseheads is a city in NY
I'm liking Horseheads as the township within Chemung county, but the "BR{something]" escapes me. Horsheads was a toll station for the Chemung Canal (a feeder/sub-route of the Erie) and later a rail hub. Could be a luggage tag.
Village of Horseheads - Village History