SOLD 14k fire opal buttercup stud earrings vintage

14k opal buttercup design stud earrings vintage beauties with lovely fire that was hard to capture. The clutch backs are marked 14k and a maker’s mark that I can not decipher. Maybe you recognize it? Solid 14k gold Genuine Opals Approximately 1.2 grams total weight I will be listing much of my jewelry over time. Please check back to see what else I have decided to part with. Thanks