This vintage Loyal Order of Moose fraternal pin features a gold‑tone moose head over a white enamel field, with enamel panels in the antlers marked “101” and “IBC.” These front‑facing designations believably identify the specific Moose lodge and internal unit/committee associated with the member who originally wore it. The piece reflects classic mid‑century fraternal jewelry construction, with crisp detailing and a compact, well‑made form typical of Moose lodge pins from the 1940s–1960s. The pin is 14.4mm in diameter or about 5/8 inch. The pin weighs 1.2 g.

Based on the information I was able to gather, I believe I have identified it correctly.  But if this listing is in error, and you are a collector or enthusiast, please reach out to me.  Thanks.