not of remotest help I appreciate, but just though it could be worth mentioning this might be a piece made for export from France in view of the word Registered occurring in both languages. The monogram LR may have simply have been the initials of a wholesaler, rather than a factory - in fact the label reminded me of the similar small circular labels that occur on Swedish glass from the 1960 ish period.
I assume the rim is cut/polished/beveled. Unfortunately, the appearance of a 'style' of decoration doesn't necessarily mean something was made in that period - you only have to think of the British 'Past Times' brand (now W.H. Smith, believe), which was very successful selling late Victorian and early Edwardian reproductions. I could be wrong, but have a feeling that genuine late C19 French enamel was applied much thicker. I've a French drinking glass (akin to something like a rummer) on which the enamel must be nearly a mm thick in places.
P.S. .....and welcome to the GMB from me as well
Topic: Enamel painted dark green glass vase c1910 Registered Depose 'LR' label (Read 807 times)
