Re: Another "Cresent Moon" ID please
Possibly half of a Sun & Moon Masonic set?
"The cufflinks are meant to be worn with the Moon cufflink on your left hand, and the Sun on your right. Evocative of not only the Junior and Senior Deacons, but also the Masculine/Feminine, the regularity over which you should govern your life, and the thought that every man spends his life some where between the Sun and the Moon, the moon on his left, and the Sun on his right, when he is facing South, the seat of Beauty."
I would guess early 20th c. Maybe late 19th c.
DCMatt