This is a Victorian Era German Glass Beer Stein, made in the late 1800's and early 1900's. Company reads P.R. from Delphine & Quentin, features glass Vine and Berry Etching. Size is 0.3 Liters as marked on glass, inside lid marking is U 93 and a negative triangle relief with a zero see images. The U 93 indicates the tin concentration value, NOT silver, this also shows that no lead was used in the remaining 7 percent. The exterior marking indicates the safe for consumption / use. Never cleaned a family owned item. Has some minor scratches on the bottom not easily shown in images. Otherwise great condition.
eBay