This table contains information on the various steel bracelets which were available as original fitment for Universal Geneve Polerouters. As yet, we are yet to find evidence that any Steel “bumper” (138ss) Polerouter was offered with anything but leather straps and signed buckles.
There appears to be 3 main buckle types which were offered chronologically with Polarouters/Polerouters: Type 1; Type 2; and Type 3. These buckles are most commonly found for 14 mm strap ends, but also for 16 mm strap ends.
It is not an exhaustive list, as there were also a number of JB Champion bracelets which are also seen in the Vintage Advertising section. We do not know yet if they were only available to the US-markets, or internationally.
18 karat gold UG-signed bracelets were also available, though these appear to be very rare.