0901A Watch Mainspring 1.50 x 0.175 x 457 (18")(Calibers in description) Mido 7 1/4 1236 using a 371 battery with

using a 371 battery with hand dimensions 120/70/20 (hour/minute/small seconds)

part number 2143

Hand dimensions are 130/80/17 (hour/minutes/small seconds)

Sold in boxes of 1000 or 100

0901A Watch Mainspring 1.50 x 0.175 x 457 (18")(Calibers in description) Mido 7 1/4 1236 using a 371 battery withDimensions: 1. 50 x 0. 175 x 457 (18") End Type: Tongue End Material: China Made unbreakable Calibers: Cortebert 522, Eberhard 1600, Elgin 868, Unitas 226 Lepine,Unitas 285, Unitas 286, Unitas 293 Lepine, Unitas 299 Lepine, Unitas 303 Lepine, Unitas 327 Lepine, Unitas 331 Lepne, Unitas 335 Lepine, Unitas 339 Lepine, Unitas 345 Lepine, Unitas 348 Lepine, Unitas 497, Unitas 498, Unitas 501, ETA 6497, ETA 6497 1, ETA 6498, ETA 6498 1, Unitas 6497, Unitas