IRRIDESCENT TUBE LINED GLASS VASE 7" HIGH X 4" AT WIDEST PART OF VASE.

THIS VASE, WAS RECENTLY PURCHASED, AT AN ANTIQUE FAIR, BUT THE OWNER, HAD NO IDEA, OF THE MAKER. I HAVE LOOKED AT NUMEROUS INTERNET SITES, AND HAVE SO FAR BEEN UNABLE TO FIND THE MAKER. AS YOU CAN SEE, THAT THIS IS A VERY FINE ART GASS VASE, BUT THE MARKS, ARE HARD TO SHOW. IT IS OBVIOUS, THAT THE VASE WAS STAMPED, DURING THE MANUFACTURE OF THIS VASE, WHEN THE GLASS WAS REMOVED, AND STAMPED, ON THE BASE AT HE SAME TIME AS REMOVAL. THE MARKS APPEAR TO BE " THREE IN A LINE EITHER Y!s or FIQURES, VERY HARD TO SEE. MY GUESS, IS THAT IT IS A CONTINENTAL GLASS MAKER. I HOPE,THAT SOME ONE WILL BE ABLE TO ASSIST ME. THANKS PETER