""Legend has it the shape of the coupe was modelled on the breast of Marie Antoinette, but the glass was designed especially for sparkling wine and champagne in England in 1663"".
Well I suppose all legends are OTT, am sure the tale is apocryphal - the above is from Wiki. Regret to say I've not followed up the quoted references to see quite what happened in 1663 that apparently suddenly prompted the use of the saucer/coupe shape................. most of the U.K. published text books discuss the use of the flute as being the shape used, in England, for champers, until George the I around 1715 - 20 ish. It's alleged he brought with him, from Hanover, the preference for tazza-shaped glasses for this drink - but it seems that most champagne during the first half of the C18 was still drunk from flutes.
None of which has anything remotely to do with Honeybee's request. These things have been made in their zillions everywhere, and unless someone recognizes the particular cut pattern, then have to say progress will be zero.
Broadly speaking, date wise, it's probably true to say that hollow stems and purling - to hide the dregs/sediment - indicate early glasses, and machine made feet and lack of a pontil depression/scar almost certainly mean C20. Assuming this one lacks any hand made features, then possibly from somewhere in the second half of the C20.
There might be some mileage in searching through Replacements.com, but you may well have already looked there.
