How to Identify the Sovereign of George IV

Start with the obverse portrait and legend. A George IV sovereign of this type shows the king's laureate head in profile facing left, with a Latin legend beginning GEORGIUS IIII and continuing with his titles. Confirm the regnal name to separate this reign from the sovereigns of George III before it and William IV and Victoria after it. Note also that George IV was portrayed two ways on the sovereign: an earlier laureate head and a later bare head, so the portrait style itself helps place the coin within the reign.

Read the reverse and the date. The earlier type carries Benedetto Pistrucci's St George on horseback slaying a dragon, with the date in the exergue below the design; on this coin it reads 1821. A crowned heraldic shield reverse, rather than St George, indicates the later bare-head type of the same king. Reading the date and identifying which reverse is present pins down both the year and the sub-type.

Check metal, size, and weight. The sovereign is a high-purity gold coin, so it should show the warm colour and noticeable heft of gold and, as a milled piece, regular machine-struck lettering and a clean edge. Measure the diameter and weigh the coin and compare against published specifications: the full sovereign is a small coin, and weighing it is the most reliable way to distinguish it from the smaller half sovereign, which shares the same designs at reduced size.

Rule out look-alikes. Half sovereigns use the same portrait-and-reverse formula but are smaller and lighter, and sovereigns of neighbouring reigns carry a different sovereign's name and head. The St George reverse also appears on later sovereigns of many monarchs, so do not rely on the reverse alone; always read the obverse legend and the date together. Beware of coins that have been mounted, tooled, or polished, which alter the surfaces and edge.

Authenticate before relying on any identification or value. Gold sovereigns have long been targets for casting, forgery, and modern jewellery copies. Genuine milled gold shows crisp, even lettering, correct weight and diameter, and honest wear; cast fakes show seams, bubbles, soft detail, or the wrong weight. Because the coin is valuable, have any significant example weighed, measured, and examined by a specialist or submitted for professional grading before assuming a date, type, or price.