This relatively young manufacture, was founded in 1967 by Armin Strom in a small town named Burgdorf located northwest of Bern. The Armin Strom Tourbillon Earth ref. ST13-TE.90 is perhaps one of our three favorite watches from this manufacture. This particular tourbillon is not only beautiful but also very stealth looking thanks to its black PVD stainless steel case. A watch that seems rugged by its looks —specially when sported on its black rubber strap— and size —43.4 mm in diameter by 13 mm in thickness— but with a delicate and perfectionist craftsmanship.