
On closer inspection the repro glass looks different to the ones on e bay. Here's the original, with little Jupiter marking.

Here's the repro, quite clearly a different font, but it looks old and has little dots between the letters, there's no Jupiter marking but it looks different to other repros

Here's both backs, original on the right.

Is there different original versions or is the one with the dots a repro?
Chhers
Chris