Excellent old quality Star Swiss movement holder. This is used to support the delicate movements of mechanical watches while they are being repaired or adjusted. This holder is sized for vintage Men’s and Women’s wristwatches. It is double sided: round movements on one side and rectangular movements on the other. The knurled turning knob rotates freely and the moving part of the holder adjusts without hesitation and then stops firmly in place with no play or looseness in the mechanism. The inside of the holder is marked “Star” inside of the triangle logo. It is marked number 2991A1, stamped Swiss on the reverse.
I cleaned up this tool, lightly oiled it with a lightweight oil, and then applied a very thin coating of beeswax to protect it from corrosion for years to come. Nice vintage patina.