The Edinburgh Assay Office — Complete Guide

The Edinburgh Assay Office is Scotland's senior assay office, with a hallmarking tradition dating to the 15th century. Its three-towered castle town mark (taken from Edinburgh's city arms) is one of the most recognisable hallmarks in British silver. Scottish silver runs to its own rules: different standard marks, an extra "deacon's mark" or "assay master's mark" in earlier centuries, and a distinct Scottish design vocabulary — quaichs, snuff mulls, thistle finials. Reading an Edinburgh hallmark correctly is essential to identifying and valuing Scottish silver.

A Brief History

The Incorporation of Goldsmiths of the City of Edinburgh received its founding seal in 1457. From 1483, silver assayed in Edinburgh was struck with a three-towered castle and the maker's mark. From 1485, the maker's mark was joined by the deacon's mark (the elected head of the Incorporation guaranteeing the assay). From the late 17th century the deacon's mark was replaced by an assay master's mark (also a personal punch, but for the official who actually assayed the piece). Date letters were added in 1681.

The 1973 Hallmarking Act unified UK assay procedure, replacing the historic Scottish system with the standard four-mark sequence used elsewhere. The Edinburgh Assay Office remains active today on Broughton Street.

How to Read a Full Edinburgh Hallmark

The Edinburgh sequence is slightly different from England's. From left to right:

1. Maker's mark — the silversmith's initials or device.
2. Town mark — a three-towered castle, confirming Edinburgh assay.
3. Standard mark — a thistle (sterling, .925) from 1759 to 1975, or a lion rampant (sterling) from 1975 onward.
4. Date letter — added from 1681.
5. Assay master's mark (1681–1759, before the thistle replaced it) — a personal punch of the official assay master.
6. Duty mark (1784–1890) — a sovereign's head.

Edinburgh's town mark: the three-towered castle, from the city's arms.

The Castle, the Thistle and the Lion Rampant

Three Scottish marks to know:

• Three-towered castle — the constant. Edinburgh town mark from 1483 to today.
• Thistle — sterling standard mark from 1759 until 1974. The single most recognisable Scottish standard mark.
• Lion rampant — sterling standard mark from 1975 onward, replacing the thistle as part of UK unification (the thistle moved to indicate fineness elsewhere on jewellery).

Sterling standard mark: the thistle (1759–1974), replaced by the lion rampant in 1975.

Before 1759 — The "Deacon's Mark" and "Assay Master's Mark"

Edinburgh silver before 1759 does not carry a thistle. Instead, the standard was guaranteed by a personal punch:

• 1485–c.1681: the deacon's mark — the elected head of the Incorporation. Marks change as the deacon changes (so dating relies on knowing which deacon was in office).
• 1681–1759: the assay master's mark — the official assayer's personal punch. Again dated by knowing which assay master was in post.

For 17th and early 18th century Edinburgh silver, an attribution involves identifying both the maker's mark and the deacon's/assay master's mark — specialist territory. Pieces from this period are valuable and we are happy to identify them.

Date Letters

Edinburgh has used date letters since 1681 — earlier than Sheffield and Birmingham. Each cycle is 25 letters (J skipped) with the shield shape and font changing at the start of the next cycle. Combined with the standard mark (deacon's mark, assay master's mark, thistle, lion rampant) the date letter pins the year of assay precisely.

Edinburgh's Speciality — Distinctly Scottish Silver

Edinburgh assayed all categories of Scottish silver — domestic tea services, salvers, candlesticks, presentation cups, ecclesiastical pieces — but the marks particularly belong to a few recognisably Scottish forms:

• Quaichs — shallow two-handled drinking bowls. Distinctly Scottish; no English equivalent. Edinburgh-marked quaichs are highly collectable.
• Snuff mulls — Scottish snuff boxes, often made from a ram's horn mounted in silver.
• Thistle-pattern flatware — late Victorian and Edwardian table silver.
• Communion plate — Edinburgh was a major supplier of Scottish ecclesiastical silver.
• Sgian-dubh and dirk handles — silver-mounted Highland dress items.

Notable Edinburgh Silversmiths

• Hugh Gordon (active 1727–1761) — leading mid-Georgian Edinburgh silversmith.
• James Ker (1723–1747) — fine Georgian.
• James McKay / Mackay dynasty — long-running Edinburgh family workshop.
• Hamilton & Inches — established 1866, still trading on Edinburgh's George Street, Royal Warrant holders.
• Brook & Son — late Victorian / Edwardian.

Scottish Provincial Silver — Linked to Edinburgh

Many Scottish provincial silversmiths (Aberdeen, Inverness, Perth, Dundee, Banff) sent work to Edinburgh for assay when they had no local assay office, or struck their own provincial marks. We cover the provincial offices in separate guides — but a piece carrying the Edinburgh castle plus a Scottish provincial maker's punch is often more valuable than the same piece would be from Edinburgh itself.

Pitfalls

• "Scottish style" silver without Edinburgh marks — a thistle finial does not make a piece Scottish. Always check the actual hallmark row.
• Worn deacon's mark on early pieces — frequent, and key to dating. Specialist identification needed.
• Misreading the castle as Newcastle — Newcastle used three separate castles in a row; Edinburgh uses one three-towered castle in a single shield. Don't confuse them.