Technical Specification of a Gold Sovereign

Written by Lawrence Chard - Company Director and Expert Numismatist • Last updated 6 Nov 2018

Modern Sovereigns

For all modern gold sovereigns, i.e. from 1817:


1964 Sovereign reverse

Diameter 22.05 mm
Thickness (depth) 1.0 to 1.4 mm
Weight 7.9881 grams (to 4 decimal places)
Standard Weight (target) 7.98805 grams
Tolerance +-  0.01296 grams
Minimum 7.97509 grams
Maximum 8.00101 grams
Alloy 22 carat gold = 0.917 parts per 1000
Actual gold content 7.3224 grams or 0.235421 troy ounces
Actual gold content 7.32238 grams or 0.235420 troy ounces
Date first issued The "modern" sovereign in 1817 and the first ever sovereign in 1489)

Read more about gold sovereign alloy analysis here

Read more about sovereigns obverse (head) designs here

Read more about sovereign reverse (tails) designs here

The Sovereign book is a great piece of reference material for collectors. Click here to view it.