Revolutionary War era (Late 18th c. ) Horn Cup

Revolutionary War era (Late 18th c. ) Horn Cup.  This is the type that a soldier would have carried in his pouch or would have been used in any tavern in America.  Initials TM branded on the bottom.  Age crack as seen in photoes.  3 in. wide by 4.5 in tall.  Excellent example an unusual , larger insize.