0142 Watch Mainspring 1.00 x 0.075 x 254 (10 ")(Calibers in description) 4003B Series Ronda Vallorbe Crossing Needle File Cut

Vallorbe Crossing Needle File Cut 2 features a round knurled handle and is 5 1/2” long (14 cm)

JR10 Miyota Quartz Watch Movement is a 3 hand movement (hour/minute/sweep second) with a "Day" retrograde at the 6 o'clock position

silver and yellow

Ruby Powder gives a high luster to platinum

09 x 325 (12 3/4")

0142 Watch Mainspring 1.00 x 0.075 x 254 (10 ")(Calibers in description) 4003B Series Ronda Vallorbe Crossing Needle File CutDimensions: 1. 00 x 0. 075 x 254 (10 ") End Type: Double brace motor barrel Material: Swiss Made unbreakable Fits Calibers: Hamilton mainspring number 2921, Hamilton mainspring number 717532, Hamilton mainspring number 718532, Hamilton 721, Hamilton 995, Hamilton 995A, Hamilton 997