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SWISS TROPIC DIVERS STRAP (original)
BESTFIT Swiss Tropic MOD Dep. divers strap ...
The original waterproof strap back in the '60s & '70s, and were original equipment on many dive watches including the Rolex Submariner. If you specified your Submariner purchase without the bracelet, this is the strap you got from Rolex.
If it is not by BESTFIT IT IS NOT A TROPIC strap
Tropic straps were made by Bestfit also known as Bestfit Tropic in Switzerland during the 1960s and 1970s. The originals were labeled "TROPIC” and marked “SWISS MADE” and were usually fitted with an “INOX” ("inox" from French "inoxydable") or “ACIER” (steel) signed buckle.Tropic straps were mounted on Rolex, Breitling, Omega, Bulova, Seiko [62MAS was originally paired with a Bestfit Swiss Tropic], Citizen, Enicar... etc etc etc ...
They were labeled “Tropic” and the lug width was added. "MOD DEP" that stands for "Modèle Déposé" which did say that the design was registered and protected. The reference no. was also visible on one end. They are made from a very pliable rubber for a comfortable wear. A "dry out" process often led to broken straps.
