Hope you'll help with this research project. There is a catalog on old-omegas.com showing a Seamaster 300 fitted with a Tropic "basket-weave" strap. I stumbled across another catalog image (which of course I can't find) of a catalog image of an Omega f300 fitted with a Tropic Star, a leather-look strap with small holes, round on the back side. I now have both of these, without spending $300. Seems like it might be interesting and fun to track this down and see which Tropic straps Omega actually sold with its watches. Tom