Dating epns cutlery

The major practical difference between EPNS and EPSS is that EPNS is much more readily re-plateable in the future when the silver has worn down.

Electroplated materials are often stamped EPNS for Electroplated Nickel Silver, or EPBM for Electroplated Britannia Metal. The Sheffield Cutlery ranges are 10, 20 or 30 microns which the factory regards as 20, 30 or 40 year plate respectively with usual wear and usage.This means that silver is plated onto a base metal of stainless steel rather than onto nickel silver.Some Hostess items from the Sheffield factory are now produced in the EPSS version.The first patents for electroplating were awarded in 1840 to George and Henry Elkington in Birmingham.This followed the discovery made by John Wright of Birmingham that potassium cyanide was a suitable electrolyte for gold and silver electroplating.