In one extant French-language catalog, there is a picture of a Seamaster 300 on a curved-end Tropic strap. On a rare eBay troll I came across not only a 20mm Tropic strap... it was curved end... it was NOS... it has the wetsuit extension... and it only cost about $200!

Behold!



And, here it is on the watch:

 

looks great! refreshing to see is not a funky NATO strap

 

The only NATO strap that belongs on one of these is a Ministry of Defence grey G10.

Tom

 

looks cool on your SM300 good find by the way ... that's got me thinking i've one of these in a draw somewhere in my man cave the strap i mean not the MS300 .

 

Very nice with the extension-mist be quite rare, and looks very nice on your 300

 

Very cool with the wet suit extension!

 

Cool. Got a dozen of these but had never even heard of the wet suit extension.
Had an extension for my Ploprof mesh, now long gone.

 

I’d buy a wetsuit just to be able to use the extension