What a keen eye you have ekimp. It is indeed a signature...very small and scrawly, but, what I can make out is what looks like the name Ramsey, then a space and the letters LGW and 84. Now, I've looked at LGW on Goggle and the Leinauer Glaswaren company comes up but looking at pics of their ware, I can't see anything that resembles. It all seems to be very bright iridescent carnival looking glass. There is a rather faint iridescence in my vase. I'll see if I can take a pic of the name etc later in the morning, Thank you for your help. I hope you can possibly help further.