0972 Watch Mainspring 1.60 x 0.10 x 305 (12") (Calibers in description) ETA 2458 mushroom cap

mushroom cap

5 mm Yellow Dial Grommet (FHS) is 12

Hermle FHS Barrel #32 Backwind comes with a threaded arbor backwind

Citizen E013M

Stem is a part number 351-420

0972 Watch Mainspring 1.60 x 0.10 x 305 (12") (Calibers in description) ETA 2458 mushroom capDimensions: 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