I have a couple of NOS Tropic Sport BLACK and now RED Big Hole 20mm straps, Swiss Made… signed 'INOX' SS 16mm buckles… 115mm x 75mm… soft and supple… they look great on vintage divers, chronographs and mil-watches…

More info on these great Tropic straps from scubawatch.org...
“TROPIC brand watch straps were 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 without the bracelet, this is the strap you got. Rolex service centers were also supplied with Tropic straps.

Tropics were produced in Switzerland during the '60s and '70s, and later manufactured in China using the original molds. The originals are signed "TROPIC" and marked "SWISS MADE", and are typically fitted with an "INOX" or "ACIER" signed buckle. The Chinese manufactured straps are nearly identical except for being unsigned and using a "China" or "Hong Kong" manufactured buckle.”

$80 each in BLACK
$60 each in RED
shipped worldwide… PayPal OK…
take 10% off thru Sunday 11/4

please email w/ any ??
thanks for looking,
Peter
greatsw at cox dot net

watch not included ;-)