0972 Watch Mainspring 1.60 x 0.10 x 305 (12") (Calibers in description) ETA 2458 Black Roman Insert 3 1/2"

Black Roman Insert 3 1/2" is a standard clock insert with a plastic case

mushroom cap

day at the 12 o'clock position

5 mm Yellow Dial Grommet (FHS) is 12

0972 Watch Mainspring 1.60 x 0.10 x 305 (12") (Calibers in description) ETA 2458 Black Roman Insert 3 1/2"Dimensions: 1. 60 x 0. 10 x 305 (12") End Type: Tongue End Material: Swiss Made Unbreakable Calibers: Alpina 585, AS 1200, AS 1201, AS 1202, AS 1303, AS 1308, AS 1317, AS 1363, AS 1378, AS 1436, AS 1471, AS 1500, AS 1576, AS 1619, AS 1670, AS 1724, Benrus BR, Brac 101, Brac 102, Brac 6013, Brac 6113, Brac 6313, Bulla 99, Cortebert 575, Cortebert 577, Cortebert 673, Damas 512SC, Dodane 8, Ebel 108, Eterna 900, Eterna 925, Eterna 970 SC, FHF 234, FHF