Otto Frei.
Quality Jewelry Supplies for Generations - Since 1930
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Gruen Watch Movement Parts


Gruen Barrel & Covers


Gruen Sweep Pinions


Gruen Sweep Second Upper 3rd Wheels


Gruen Watch Regulators Flat


Gruen Rollers


Gruen Watch Regulators Breguet


Gruen Upper Balance Cap Jewels


Gruen Lower Balance Cap Jewels


Gruen Set Bridges


Gruen Sweep Second Tension Springs


Gruen Set Lever Pressure Springs


Gruen Pallet Forks and Arbors


Gruen Balance Completes

Balance Completes in both Breguet Over-coil Hairsprings and regular Flat Hairsprings

Mainsprings to fit Gruen Watch Movements


Gruen Watch Stems

Gruen Cal 330 Staff


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Gruen Cal 405 Part #722 Hairspring


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Gruen Barrel Arbors


Gruen Watch Crowns


Gruen Cannon Pinions
Gruen Caliber First Year Production Dates


Gruen Center Wheels


Gruen Click Springs


Gruen Clicks


Gruen Clutch Lever Spring (Setting Springs)


Gruen Clutch Levers


Gruen Clutch Wheels


Gruen Crown Wheel Caps


Gruen Crowns Wheels


Gruen Escape Wheels


Gruen Fourth Wheels


Gruen Hour Wheels


Gruen Minute Wheels


Gruen Pallet Arbors


Gruen Ratchet Wheels


Gruen Set Levers (Detent)


Gruen Setting Wheels (Intermediate Wheels Old #23


Gruen Third Wheels


GRUEN Watch Crystals


Gruen Winding Pinions
Otto Frei, Watch Parts Since 1930
Customers Entrance
126 2nd St. Oakland, California 94607
Mailing Address: PO BOX 796, Oakland Ca. 94604
Freight Shipment Address: 119 3rd St. Oakland Ca. 94607 USA

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For stock checks on watch parts not listed on the site please call the watch material department at 510-832-0355 ext 2., Monday to Friday 9 AM to 5 PM Pacific Standard Time Zone.
Stock Checks For Watch Movement & Watch Case Parts

Security/Privacy/Return Policy

United States
510.832.0355 EXT. 2
800.900.3734 (fax)

510.832.0355 EXT. 2
510.834.6217 (fax)