German, probably 18th century and later, 1800

the silver-gilt rim engraved with Latin inscriptions dedicated to Johann Melchior Dinglinger and his daughter, in fitted case

Overall the condition is good. The gilding, which is quite light, is worn on the exterior. There is some wear to the horn, including losses to the edge of the finial. There are a few minor stable vertical cracks running through the horn.
"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 broad silver-gilt lip rim inscribed on one side: HOC QUI HAURIS POCULUM / VENERARE MEMORIAM / JOHANNIS MELCHIORIS DINGLINGERI / EGREGII ARTIFICIS VIRI ANTIQUAE FIDEI / XXVI LIBERORUM EX UXORIBUS PARENTIS / HUIUS VINEAE DELICTIS REFERTAE POSSESSORIS OLIM / ATQUE EXORNATORIS / QUAM / UT SE SUOSQUE DIFFICILIBUS TEMPORIBUS SUBDUCERET / AB AUTORE CONDITAM / LAETIORIBUS USIBUS A POSTERIS NUNC ADHIBERI POSSE / DIVINA BEGNITAS CLEMENTER ANNUIT

and on the other : ANNAE MARIAE SARTORIAE / B. DINGLINGERI FILIAE VINEAE JAM DOMINAE / IPSO S. ANNAE DIE / QUI EIDEM SIMVI ONOMASTICUS EST ATQUE NATALIS / HOC QUIQUID EST MUNUSCULI / D.D.D. / FRATER CUM SORORE / AO. R. S. M. DCC. XXXVI / VIVAT DIU CUM MARITO FELICITER,

In translation this reads:

May you who drain this cup honour the memory of Johann Melchior Dinglinger, outstanding craftsman, man of venerable skill, father of 26 children by his wives, once the owner and decorator of this wine cup, filled with delights, realised by its creator so that he could support himself and his family in difficult times, God's kindness has mercifully agreed can be offered to happier uses by subsequent generations

To Anna Maria Sartoria, daughter of B. Dinglinger and now mistress of the cup on the very day of S. Anna which for her is at once name day and birthday, which, however small it is, was given and dedicated as a gift, brother with sister, in the year of our salvation 1736, may she live long and happily with her husband.

According to the inscription: This rhino horn cup and cover was initially made and owned by Johann Melchior Dinglinger (1664-1731). His daughter Anna Maria (1698-1760) probably received this cup as a gift from her brother Johann Friedrich (1702-1767).

Johann Melchior Dinglinger was a great German goldsmith and Court Jeweller in Dresden to August the Strong. See Das Grünes Gewölbe zu Dresden, Munich/Berlin, 1970, p. 191 ff.  for illustrations of their fruitful cooperation.