Elgin Factory Balance Staff for 5/0s Grade 720 (Jeam 23D) movement

Elgin Factory Balance Staff for 5/0s Grade 720 movement, Reflll # 720-264, new in envelope. The Grade 720 is a Jeambrum caliber 23D based French wrist watch movement. See images for further details. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a marginally adequate job of representing the item.