Mint Darkened ??

DoubleDime · July 22, 2021 5:35AM

I've read that the British Royal Mint darkened farthings from 1898 - 1918 so that they wouldn't be mistaken for gold half sovereigns. Anyone know how this was done ? Also some 1934 and 1944 - 46 pennies were darkened, why was this ?

wybrit · July 22, 2021 5:48AM

The pennies were darkened using sodium thiosulfate.

The "why" is discussed here: http://wybrit.com/Brit Tips/Brit Tip 5.html

wybrit · July 22, 2021 5:53AM

The farthings were darkened in a similar manner.

pruebas · July 22, 2021 9:56AM

@wybrit said:
The pennies were darkened using sodium thiosulfate.

The "why" is discussed here: http://wybrit.com/Brit Tips/Brit Tip 5.html

I recognize that name. Photographic fixer.

I like your website. Lots of good info.

DoubleDime · July 26, 2021 12:55PM

Thank you for this information. Can you tell me how this was done ?

Mint Darkened ??

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