Jaeger Lecoultre Main Spring Cal. 211M Part 770, NOS

4 x Swiss unbreakable pocket watch mainsprings 3.00 x 0.20 x 520. Parts

Jaeger LeCoultre MainSpring Cal. 815 Part 770 771 1, NOS

LECOULTRE CALIBER 480 OLD STOCK MAINSPRING TEE END PART 1

Waltham Pocket Watch Mainspring 16S 2247 / 2268 EXACT Alloy NOS

LECOULTRE CAL 480 CLICKSPRING COMB NOS WATCH PART 30/31 WATCHMAKERS

Waltham pocket watch barrels and mainsprings

VINTAGE POCKET WATCH SWISS MAIN SPRING MAINSPRING ILLINOIS SIZE 16 16S NOS 47331