3 5/8" wide and 5/8" high, rim thickness 3mm. My thoughts were it might be new but I cannot find any references at all. It's well done, not flashed, a solid layer of red glass which can be seen in the cut edges, acid etched textured background which is quite grey. Very well finished, no rough bits, sharp edges etc. For a small piece it's very sweet and the decoration of one colour on clear has been utilised well in the design.
So I can't find any references for new and wondered if there was any possibility it might be older than I think?
thanks for looking and any leads or links if there is newer stuff around