Hi there , I have two pieces of large and very heavy glass. both are approx 13 inches tall one is a penguin and the other is a heron. They are both purple in colour but at night in my light blue room they too turn blue. I think they date from the 1970s and they are both signed on the bottom with Zanetti L . Please can anyone tell me anything about them , I would be very grateful.
Regards
Maxie121