From the fashion period of the 1920's or 1930s, a green swirl, or mottled, celluloid belt buckle or slide. The larger buckle measures 2-3/4" wide x 3-3/4" long. An Art Deco look, the buckle has a slight curve at the center (measuring 1/4" in height). Ahh, why not into repurposing? I'm thinking of possible for hair ornamentation. Only your imagination is the limit.
Condition: Generally good. The back of the buckle shows wear and scuffing. Possibly some in the manufacture. Top side shows a tiny bit of scuffing.