Jaeger Lecoultre Main Spring Cal. 206 Part 770 1

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

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

Jaeger Lecoultre Mainspring Cal. 211-M Part 7771, NOS

Jaeger LeCoultre Cal 497 Part Movement Balance Wheel Spring Bridge Watch

Jaeger Lecoultre MainSpring Tee Cal. 484-464-494 Part 770 1, NOS

Jaeger Lecoultre MainSpring Cal. 460-9OL-9” 490 Part 770 1, NOS

Jaeger LeCoultre MainSpring Cal. 7” 426/1 Part 770