UK Coin Valuation Guide: Crowns, Half Crowns, Florins and Proofs

A useful UK coin value starts with the exact coin in front of you. Its date, variety, strike, condition and authenticity can change the price far more than its face value. This first guide covers older British crowns, half crowns, florins and proof coins. It explains how to assess them; dated price ranges will be added when supported by comparable completed sales.

Know the denomination

A predecimal crown was five shillings; a half crown was two shillings and sixpence; a florin was two shillings (one tenth of a pound). The modern commemorative £5 crown is a different face-value issue. Start by recording the monarch, date, denomination and design on both sides, then check the edge, diameter and weight against a reliable reference.

Date, variety and strike

Two coins of the same denomination and year may have different designs, mintmarks, edges or varieties. Record these details before looking up prices. A proof was specially struck for collectors; it is not simply a shiny circulation coin. Matte proofs and ordinary proofs also need separate comparisons. If the variety or strike is uncertain, do not borrow a price from a more valuable version.

Condition and grading

Look for wear on the highest points, original lustre, marks, hairlines, scratches, edge damage, cleaning and repairs. Grade has a strong effect on value, especially for scarce dates and proofs. NGC uses MS grades for uncirculated circulation-strike coins and PF grades for proofs on a 60–70 scale. A grade on a holder is useful evidence, but compare the same date, variety and grade rather than treating every PF64 coin alike.

Silver content

British silver coinage changed from sterling silver (0.925) to 0.500 silver in 1920, then to cupro-nickel for circulating silver denominations in 1947. Metal content can provide a reference point for a common, worn coin. Scarce varieties, attractive original surfaces, high grades and proofs may trade well above metal value.

How to find a realistic value

Find several recent completed sales of the same date, denomination, variety, strike and similar condition. Record the sale date, grade, currency and whether the number is hammer price or includes buyer’s premium. A dealer’s advertised price is an asking price, not proof of a sale; an unsold auction estimate is not a realised value. Adjust for condition, provenance, certification and any damage. Use a range when comparable sales differ.

Where this guide begins

Crowns: confirm the precise design and edge, then compare circulation strikes and proofs separately. Half crowns: check date and variety carefully, as common worn pieces and exceptional proofs belong in different markets. Florins: identify the type and year before comparing grades. Proofs: check authenticity, surfaces and certification, and seek matched proof sales rather than ordinary coin listings.

For a coin you own, clear photographs of both sides and the edge, plus its weight and diameter, are the best starting point for an enquiry through our Contact page. This guide is a method for researching values, not an individual appraisal.

Reference notes

Royal Mint Museum: predecimal denominations and florin history — https://www.royalmintmuseum.org.uk/ . The Royal Mint: history of silver in British coins and guidance on coin pricing — https://www.royalmint.com/ . NGC: grading scale and proof designations — https://www.ngccoin.com/coin-grading/grading-scale/ .