Vintage Art Deco sterling 925 marcasite earrings

Beautiful Art Deco style vintage sterling silver marcasite dangling earrings. Marked 925 and a small lower case b in a circle. Unfamiliar with the hallmark, so if anyone knows what maker made this I would love to know. Cascading earrings, great sense of movement. Measures 1.5” length without the hook (2” with the hook), 0.5” width.