Delightful set of 6 Long Drink glasses made by Cristaleria Rotondo, the Italian brand from the 65s/70s whose production was closed. the rotondo crystal is one of the few of high quality, being known for the mastery of the models made by the best artisans, the crystal heated and dried in the best furnaces, the crystal density of 24% Pbo, which represents its superior quality, a fact that can also be seen from the photos, this one having a special shine, the transparency and clarity being easy to notice. the model is a simple one, consisting of a silver band in a zig zag "Greek Key" model, similar to that of the Fumo brothers