Many thanks all. Appreciate it.

hi. Given the comments regarding water - I did have the thought of just using distilled boiling water (one coin at a time) - just immerse them to loosen /dissolve the organic stuff (no scrubbing just immersion in boiling distilled water) - Any thoughts on if this has a negative impact.

Thankyou everyone for your valuable comments.

Hello. I'm a newbie after acquiring my Dads Australian half-pennies and Pennies. I have a couple of questions on olive oil cleaning.

1)  From a buyer or sellers perspective - will a clean with olive oil and proper animal bristle brush have any impact whatsoever (assuming its done properly). I mean has anyone actually bought or sold a coin that's undergone this type of clean?

2) Is it recommended after the olive oil clean to wash the remaining oil off in plain warm water? ( I don't think so ... but I would like to ask anyway)

Many thanks