Unknown designer, but it appears that Coro copied the pattern on these beauties from the 1940's (my opinion). Designed of Gold vermeil over solid sterling silver. Each horse is hallmarked on back STERLING.
All original, nothing has been altered or changed. Size: about 2.25 (see photos for accuracy). Weight: A hefty 37.6 grams, one horse is slightly heavier than the other. Condition: Pin backs work well, gold is good, however as I mentioned above a few rhinestones on the ears are missing and the black enamel slightly worn on the ears. 80 years of age, amazing!
It's my pleasure to bring you a treasure!