Polerouter Sub - Pepsi bezel

I know that several collectors believe that there was a version of the Polerouter Sub with a Pepsi bezel (as pictured below).

Since I've not seen any reference to it in say a catalogue or brochure (the black, red, blue, green and orange bezels are all shown in catalogues) then I'm not yet completely convinced. Does anyone have any evidence other than there being a few examples that have surfaced?

They look very similar to Bulova bezels to me but then I guess Bulova did own UG throughout the period that these were produced. Is there any evidence these bezels were a Polerouter Sub option at the time rather than Bulova parts that just happen to fit?

Happenstance in my opinion. Shouldn't that be a Coke bezel?