Decoding American Marks
How American silver is marked — and why it matters
American silver tells its story differently than English silver. There is no centuries-old network of assay offices, no formal date letter system, no compulsory standard mark. Instead, American silver carries a maker's mark paired with a fineness designation — a word or number that tells you the silver content. Reading American marks is usually simpler than reading English hallmarks, but dating and attributing American pieces requires knowing the maker's trademark history.
The American marking tradition
The colonies and later the United States never established a compulsory assay office system. Silversmiths marked their pieces with their own name or initials as a matter of professional pride and commercial identification. In the 17th and 18th centuries, early American silversmiths like Paul Revere stamped pieces with their full name or initials in a rectangle. No standard fineness mark was required; the maker's reputation was the quality guarantee.
This informal system continued through the early 19th century. When sterling became the American industry standard in the late 1860s, makers began adding the word "Sterling" or "925" to confirm fineness. By the 20th century, every major American silver maker had a registered trademark, and pieces typically carried both the trademark and a fineness word.
Common American fineness marks
The fineness mark tells you what standard of silver a piece meets. The main American marks are:
"Sterling" — 92.5% pure silver. The dominant American mark from the late 1860s to the present. This is by far the most common mark you will encounter on inherited American silver.
"925" or "925/1000" — The numerical equivalent of "Sterling," indicating 925 parts silver per 1000. Used more commonly on modern American sterling and on American silver jewelry.
"Coin" or "Pure Coin" — 90% pure silver, the American pre-sterling standard. Usually on pieces from the 1820s through the 1860s.
"Standard" — Typically used for coin silver (900 parts per 1000), though the term has also been used loosely by some makers. Usually indicates pre-1870 American silver.
"C" or "D" — Abbreviations for "coin" and "dollar," respectively. Used on some early American silver. "D" specifically referenced the metal content of silver dollars that were melted to make the piece.
"900" — Numerical mark for coin silver, 900 parts per 1000.
Pseudo-hallmarks
Some major 19th-century American firms adopted pseudo-hallmarks — visual marks designed to resemble English hallmarks but carrying no legal assay office meaning. The most famous is Gorham's lion-anchor-G: a lion passant, an anchor, and the letter G in three small shields that at a glance look like English marks. Tiffany, Kirk, and a few other firms also used pseudo-hallmark devices in certain periods. These marks were trademarks, not assay marks. When you see a pseudo-hallmark, look for the accompanying word "Sterling" or "Coin" to confirm the silver content.
Major American silver makers and their marks
Recognizing the maker is often the key to understanding value. These are the principal American silver firms whose pieces turn up in estates:
Tiffany & Co. (New York, founded 1837) — Marked "Tiffany & Co." with pattern or design names and a directive letter indicating the company president during the piece's production. Premier quality and highest values.
Gorham (Providence, Rhode Island, 1831) — The lion-anchor-G pseudo-hallmark plus "Sterling" on sterling pieces. Date letters or year codes were used in some periods.
Reed & Barton (Taunton, Massachusetts, 1824) — Marked with the Reed & Barton name, often with model numbers and pattern names. Produced extensive ranges of both sterling and silverplate.
International Silver (Meriden, Connecticut, 1898) — A consortium of older Connecticut silver firms. International marks can include pattern names and firm initials of the constituent makers.
Samuel Kirk & Son (Baltimore, 1815) — Famous for its repousse work. Marks include "S. Kirk & Son" variations and standard marks.
Stieff (Baltimore, 1892) — Later merged with Kirk. Known for reproduction-style American silver.
Towle Silversmiths (Newburyport, Massachusetts, with roots to 1690) — Classic American patterns, marked "Towle" with pattern name.
Wallace Silversmiths (Wallingford, Connecticut, 1833) — Marked with the Wallace name, often with pattern identification.
Lunt Silversmiths (Greenfield, Massachusetts, 1902) — Quality mid-century American sterling. Marked "Lunt" with pattern name.
Dating American silver
Without date letters, dating American silver relies on mark variants and stylistic evidence. Major firms changed their trademarks periodically, and reference books document the date ranges for specific mark versions. Pattern names, design patent dates ("Pat. 1894" or similar), and model numbers sometimes appear on pieces and help narrow dates. Construction techniques — hand-hammering versus machine spinning, solder types, casting quality — also help experienced specialists place a piece in a decade.