This wonderful American sterling mug (or cup) was made by Tiffany and the quality of the work is there for all to see. One seems to see two shades of silver almost as it were colored. Note also the heavily decorated handle. The mug is a little over 3 inches tall and 2.5 inches in diameter. The weight is an impressive 5.2 ounces on an accurate postal scale. In the last picture is shown the mark on the bottom. This is the mark Tiffany used between 1875 and 1891. The inscription, dated December 31, 1879, bears this out. Nineteenth century Tiffany pieces are becoming hard to find.