UV Lamps and Control Tools

UV lamps and control tools are essential instruments for the authentication and expertise of coins, banknotes and medals. Used by collectors, dealers and numismatic experts, these devices allow precise examination of characteristics invisible to the naked eye.

Ultraviolet lamps, available in different wavelengths (mainly 365 nm and 254 nm), reveal cleaning traces, hidden restorations, restrikes and characteristic fluorescences specific to certain metal alloys or printing inks. They also allow the detection of counterfeit banknotes thanks to security fibres and ultraviolet-reactive inks integrated by central banks.

These tools come in several forms adapted to the specific needs of numismatists: portable UV torches, swan-neck desk lamps for stationary use, or LED UV lamps offering extended lifespan and reduced energy consumption. The luminous power, measured in microwatts per square centimetre (µW/cm²), determines the quality and precision of the examination.

Combined with numismatic magnifying glasses and other examination instruments, UV lamps are part of a comprehensive approach to verification and authentication of ancient and modern coins, collectible banknotes as well as medals and tokens. They are particularly recommended for studying silver coins, whose surfaces can reveal under ultraviolet light any post-minting interventions.

The choice of a suitable UV lamp depends on several technical criteria: the emitted wavelength, the power of the light source, the ergonomics of the device, battery life for portable models and the quality of the UV filter ensuring user safety. Some models incorporate mixed UV and white light illumination, thus offering dual functionality for a complete examination of coins and banknotes.