as with most allegedly antique glass, we're back to the eternal problem of deciding whether something is period or repro. It's not difficult to look at something that shows distinct and known characteristics and say ah yes, that's Bohemian or ABP or deco or nouveau, but then comes the issue of dating, and this isn't always easy from a screen image alone. Bohemian isn't my area - sometimes I think nothing is my area -there was a time when we had some of the knowledgeable Continental collectors as members, and I'm sure they would have been able to help with a piece such as this.
Often it needs experience to say a given piece is 'right' - discoloured and slightly worn enamelling - raking the light across a plate to assess any knife marks - wear on high spots and those parts that would make contact - thickness, which can be more substantial on older glass - no one pretends it's easy - and sometimes it's very difficult. IMHO the best you might do with a piece like this is to suggest a decade or two - maker would be out of the question I'd suggest.
This plate may well be second half C19, it might be mid C20 - visiting museums, antiques fairs, galleries etc. might just help. Sorry to be rather useless.
Please, what is stuck up?
