A professional watchmaker’s tool built for precision — and built to last.
Offered here is an authentic Koschalka watchmakers mainspring winder, stamped “GERMANY,” confirming its origin and quality. Koschalka tools were widely respected among professional horologists and are increasingly sought after by collectors today.
This example features the classic Koschalka single-barrel design, with a smooth-operating crank, sliding arbor, and secure locking mechanism — ideal for safely winding and installing mainsprings in vintage mechanical movements.
The tool comes housed in its original black textured fitted case with red interior, a combination strongly associated with Koschalka production and rarely found complete.
Genuine Koschalka professional watch tool
“GERMANY” stamp visible on the tool
Smooth hand crank with dark knob
Sliding arbor with knurled locking screw
Solid steel construction
Original fitted storage case included
Tool is in good vintage working condition
Mechanism turns smoothly and locks securely
Light surface wear and patina consistent with age and professional use
Case shows cosmetic wear and scuffing, but hinges and latch function properly
No repairs or modifications noted
📸 Please review all photos carefully — photos are part of the description.