How long for that to start re - toning?
I have read on here about people leaving coins on window cills for a while.
i have to say I prefer my coins toned rather than lustre, it says to me that that coin has had a life rather than hidden away in a box.
However I have no objection to dipping, not cleaning though?
If it removes grime.
btw
I like the Farthing Mick, even if they have lost their original tone.