Antique coins draw interest precisely because of their age and scarcity — which unfortunately also makes them a target for reproductions and altered pieces. Whether you're evaluating a coin you already own or considering a purchase, a handful of checks go a long way.
1. Weight and dimensions
Genuine coins from a given mint and era were struck to fairly consistent weight and diameter specifications. Compare against published specifications for that coin type.
2. Metal and magnetism
Most historic gold, silver and copper coins are not magnetic. If a coin marketed as gold or silver is attracted to a magnet, that's an immediate red flag.
3. Mint marks and die details
Comparing a coin against high-resolution reference photos of confirmed genuine examples from the same year and mint can reveal inconsistencies.
4. Edge and surface texture
Cast counterfeits often show a seam line around the edge, or a slightly grainy surface compared to a genuinely struck coin.
5. Provenance and paperwork
Where available, a coin's ownership history or certification from a recognised grading service adds real confidence.
When in doubt, ask a dealer
At M.K. Pokkisham, every coin is checked against known references before it's listed, and we're always happy to answer questions about a piece you're considering.