This little guy stole my heart! I adore hummingbirds, and this one is so different from what I am seeing via google.
Its tiny, 1-1/2" by 1-1/4". Can be worn as a pendant or pin.
Whoever owned it previously must have worn it, a lot! Part of the sterling letters are worn away, and looks like a mark underneath that. I searched the data bank, but the mark is so tiny that I cant make it out.
Help, its driving me crazy 
From the bleacher seats, to me, it looks like the letters were either wire brushed, filed or over-buffed away. Not intentionally but possibly as a result of splatter when the pin and closure were added or other renovations done.
You have 2 small puzzle pieces of the signature or hallmark so its still possible to match like a partial fingerprint.
Someone would have to recognize the style to identify that mark. The top mark reads “sterling,” but I can’t tell about the bottom one
