I would like info on Hofbauer Crystal. I have several pieces of The Byrde Collection, however, one piece seems different. It is a 7" deep ashtray with the bird on the bottom with acid etching around it. I found it on ebay but w/out the acid etching. Also it looks like its uranium glass. The other pieces I have look more clear. This one dif has the yellow/green of uranium glass. please help! thanks Toto :huh: