I placed the nine carat gold cuff-links in a thimbleful of pure ammonia - what a pungent pong! - and let them stew therein for awhile. They seem to date from 1923.
The ammonia is so powerful - even abrasive - that it has removed all vestiges of grease and grime, mostly from the tiny links.
They are now in fine condition.
100 years of the Browning B25 Superposed
16 hours ago
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