Hi there, the "R" was added by someone you can tell as it is not uniform like the "Lalique" is. I am also going to say the piece as a whole is a knock off or a fake. I dont wish to rain on your parade but I have had quite a few of these over the years both from the pre-1945 "R" Lalique era and after, we used to specialize in French art glass when it was still plentiful to purchase and resell and specifically pre-1945. And also as the link someone provided states Lalique never numbered their items in this era, I have probably bought and sold several hundred pieces or more of R Lalique and never once had a piece that had any kind of numbering on it indicating that it was supposedly a limited edition. Why I believe it is a fake is the frosting is not uniform and neither is the molding, its not crisp like the genuine article would be even though it may be a vintage piece. I hope this was helpful, sorry to be the bearer of bad news.
