Hi, firstly a thanks for keeping an eye out for this attribution. Secondly an apology for the late reply but I've been otherwise engaged. There are certainly similarities with the Hermitage glass but I have also checked the gilding and it could well be electroplated, although the edge is irregular so that would tell against it I believe. I've had no additional insight as to their origin but agree that MVM Cappellin is unlikely as I can't believe that they are Murano. According to Andy McConnell the Lobmeyr mark would be more precise if made by them. I don't have sufficient knowledge of Lobmeyr to comment. At the moment I'd have to say that the Russian attribution looks best but wouldn't the mark be in cyrillic script? Kind regards, Neil