German, in late 15th century style

the buffalo horn standing on two pairs of clawed feet, with pierced foliate straps, the tail terminating with a turret, the mouth piece with further strap work incorporating running deer, lid repoussé with ovoid shapes and tapering to spiral finial (2)

Overall condition good. Wear to gilding. General overall surface dirt. The lid has four small holes where collet mounts where presumably affixed. On the body , one claw foot mount is slightly bent and will need reattaching to the body. Loss of two leaves to collar mount and to foot mount.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

The tradition of drinking horns is of Scandinavian origin but was popular in Europe from the middle ages.  They were used on ceremonial occasions with the horn passed from guest to guest around the table. According to legend a griffin gave St Cornelius a claw endowed with the power of detecting poison and thus it was believed the horn would show if the beverage had been poisoned or would counteract poison if it was present.  The ibex or buffalo horn was particularly popular in Germany.