A Rare and Highly Collectible SINN Vintage Compressor Chronograph Switzerland, 60s
Matte, black, presumably Singer made exotic dial with tritium luminous mass, baton hour markers, white syringe tritium hands
All stainless steel compressor case with screwback caseback, bi-directional bezel
40mm
High grade Valjoux 726 manual wind movement, 17 jewels, signed Sinn
New handmade calfskin, black calf leather strap
