I think they are the same, however, unfortunately I don't know enough about the markings in order to confirm a date for your glass.
Purely speculation, however, I would think the acid etched mark shown in the link, would be a fairly recent mark as It can be seen on some modern VSL pieces. In terms of the initialled engraved mark on yours i think this has been used for a few years, so may be a little harder to pinpoint exactly...sorry I can't be of more help, I'm sure someone will confirm soon.
