Sandalloy Mainspring S7213 – 1.60 x 0.08 x 11½” – Sandvik Steel Inc. USA Pocket WatchSandalloy Mainspring S7213 1. 60 x 0. 08 x 11 Sandvik Steel Inc., USA For Swiss Watches NOS Description: Vintage Sandalloy mainspring, reference S7213, produced in the U. S. A. by Sandvik Steel Inc., Sandsteel Spring Division, Fairlawn, New Jersey. This high grade mainspring was engineered for Swiss watches and made from Sandviks renowned Sandalloy material designed for long lasting elasticity, rust resistance, and consistent power delivery.
perfect for keeping your keys secure in a sleek and minimalist way
22 mm case fitting → 20 mm at buckle (24 mm buckle width)
Rear engraved: "Jean Ramsbottom 14
Renata Balance Wheel & Hairspring – For ETA 2640 / 2650 Inca
Spring clasp: Present and working
Sizes: Small (20mm) and Large (30mm)
Condition: Appears unused in original case
Many gemstone-set silver rings of this type were produced by small workshops and independent jewellers during the late 20th century
with damage near 3 o’clock
Case diameter (excluding crown): 44mm
it’s ideal for adding a touch of elegance to both casual and formal outfits
showing minimal signs of age or use
