Assay Collection

Assay laboratory with various forms of furnace
863682 Assay laboratory with various forms of furnace; (add.info.: Assay laboratory with various forms of furnace including and athanor or 'Slow Harry', 7)

A woodcut engraving depicting an assay laboratory. In this picture gold and silver are being assayed, 16th century
5311197 A woodcut engraving depicting an assay laboratory. In this picture gold and silver are being assayed, 16th century; Universal History Archive/UIG.

Assay laboratory for gold and silver, 1574 (engraving)
863685 Assay laboratory for gold and silver, 1574 (engraving); (add.info.: Assay laboratory for gold and silver. 1) Furnace: 2) Sheet of iron onto which assays are poured: 3) Parting flask

Views in the Royal Mint, London (b / w photo)
6013706 Views in the Royal Mint, London (b/w photo) by English Photographer, (20th century); Private Collection; (add.info.: Views in the Royal Mint, London)

Scale Maker, Robert Vincent, trade card (engraving)
983986 Scale Maker, Robert Vincent, trade card (engraving) by English School, (18th century); Private Collection; (add.info.: Scale Maker, Robert Vincent, trade card)

Silver hallmarks. Handle of a piece of silver cutlery showing assay marks and hallmarks. These symbols indicate the quality and origin of the piece

EVNT2A-00114
Klondike miners weighing their gold in a Dawson City bank, 1898. Hand-colored halftone of a 19th century illustration

Spain. Altar server singing. Essay. Engraving, 1886. Colored
Spain. Altar server singing. Essay. Engraving by Perez. Painting by Arcadio Mas y Fondevilla. La Ilustracion Espanola y Americana. 1886. Colored

Essay of a Opera. Versailles. Engraving. Colored
Essay of a Opera. Versailles. Painting of Luis Jimenez Aranda (1845-1928). Spanish painter. Engraved by R. Brend Amour. The Artistic Illustration, 1887. Colored

Chemical Apparatus
Early chemical equipment, mainly furnaces of various kinds - an assay furnace, an athanor, and a reverberatory among others Date: 18th century

Hopton Haynes
HOPTON HAYNES Assay-master at the oyal Mint, London. Date: 1672 - 1749

Japan - The Imperial Mint at Osaka - The Assay Furnaces Date: circa 1910s

Assay laboratory for gold and silver. 1) Furnace: 2) Sheet of iron onto which assays are poured: 3) Parting flask: 5) Assay by water displacement

Assay laboratory, showing muffle furnace and balance, left. From De la pirotechnia by Vannoccio Biringuccio (Venice, 1540)

Assay laboratory with various forms of furnace including and athanor or Slow Harry, 7, self-stoking furnace for cementation, 9, and barrel-shaped furnace, 3

Assaying copper and lead: prepared and weighed ore (1) and assay oven (2). From 1683 English edition of Lazarus Ercker Beschreibung allerfurnemisten mineralischen Ertzt- und Berckwercksarten

Assaying: Various muffles used in assay ovens for assaying gold and silver 1, 2, 3: 4, 5, 6, stopples, bottom plates and covers: 7, wooden mould for forming muffles: 11, 12

Chemical Laboratory Aparatus C017 / 3477
Plate from 18th century encyclopedia showing an illustration of different types of chemical laboratory aparatus. The illustration shows various furnace types, bellows, reverboratory and assay device

Coin production, 19th century
Coin production. Quality control worker at a minting factory verifying the coins produced. Artwork from the tenth volume (second period of 1892)

Fluorescence assay machine. Close-up of part of a machine that uses fluorescent light to analyse organic samples

Money Changer / China
A money changer examines a coin to check against others which he stoes on strings to correctly assess size and weight

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"Exploring the World of Assay: From Royal Mint Views to Engraved Opera Essays" Step into the historic Royal Mint in London through a captivating black and white photo, where centuries of precious metals have been meticulously assayed. Discover the craftsmanship of Robert Vincent, a skilled scale maker whose trade card engraving showcases his dedication to precision and accuracy. Travel to Spain and witness an altar server's melodic voice as he sings, captured beautifully in an 1886 colored engraving. The essay-like depiction transports you to a moment filled with devotion and music. Immerse yourself in the grandeur of Versailles as you delve into an opera essay that captures the essence of this magnificent art form. The vibrant colors bring each note and emotion to life on paper. Uncover the scientific side with a glimpse into chemical apparatuses used for meticulous testing. Hopton Haynes' expertise shines through EVNT2A-00114, showcasing their commitment to quality control. Relive history at Wall Street during the tumultuous year of 1920, where guards stand watch at the entrance of the Assay Office amidst chaos caused by bombing. This poignant image reminds us of both resilience and vulnerability. Journey across continents to Japan's Imperial Mint at Osaka, where assay furnaces glow brightly as they test precious metals with utmost precision. Enter an assay laboratory dedicated to gold and silver analysis; witness molten metal poured onto iron sheets for accurate measurements. De la pirotechnia offers insight into various furnace designs including Slow Harry’s athanor - truly fascinating. From ancient traditions rooted in minting coins to modern-day advancements in scientific analysis, assays continue to play a vital role in our understanding and valuation of precious materials.