Cleaned Coins

[Gary D]

Wow. Do you think your method would work on my 1720 halfpenny?

Amonia would certainly work on the verdigris, but it evaporates quickly, so cannot just be put on affected parts of the surface and if you immerse the coin in the ammonia you strip the patina. Being me, I would have to experiment, particularly as it is pretty much unsaleable as it stands.

Oh, I don't know. The obverse is totally unaffected, and it's a VF coin otherwise.

Although I wouldn't touch copper I'm not too anti cleaning silver. Saying that it must be UNC or near UNc as a cleaned lower grade just doesn't look right. Also only a light dip, no polishing or any treatment that would leave scratching.

[joey]

It seems to take forever.

interesting, i may try that for myself on 1 or 2 cheapie coins.

i do like the lovely blue tone some of my victorian silver has, but i hate the extreme rainbow toning that the americans seem to like.

Artificially assisted very often. E.g. petrol.

The petrol,is that only used for silver or is it used on copper coins to the same effect.I have a couple of farthings I bought from the USA,graded by NGC,that are quite colourful.You have me thinking now.I did wonder how they toned to the colours.

[Peckris]

It seems to take forever.

interesting, i may try that for myself on 1 or 2 cheapie coins.

i do like the lovely blue tone some of my victorian silver has, but i hate the extreme rainbow toning that the americans seem to like.

Artificially assisted very often. E.g. petrol.

The petrol,is that only used for silver or is it used on copper coins to the same effect.I have a couple of farthings I bought from the USA,graded by NGC,that are quite colourful.You have me thinking now.I did wonder how they toned to the colours.

Hm - it could have been oiled at some point, but blatant rainbow toning (as seen on eBay) is usually much more obvious than that.

[ski]

this was the double florin proof that i refered to

http://www.ebay.co.uk/itm/RAINBOW-TONED-PROOF-1887-JUBILEE-FLORIN-NGC-PR-65-/250806595890?pt=LH_DefaultDomain_0&hash=item3a653cf132

ski.

[Peckris]

this was the double florin proof that i refered to

http://www.ebay.co.uk/itm/RAINBOW-TONED-PROOF-1887-JUBILEE-FLORIN-NGC-PR-65-/250806595890?pt=LH_DefaultDomain_0&hash=item3a653cf132

ski.

That's EXTREMELY suspicious. The enlarged photographs, while not having the classic appearance of a negative, nevertheless appear to be the inverse of the NGC slabbed pictures. The light areas of the latter seem dark in the enlargements, while the blue areas appear red, and vice versa. At the very least, there has been some jiggery-photoshoppery.

[scott]

looks terrible. i like a good natural tone.. that is horrible

[Red Riley]

The petrol,is that only used for silver or is it used on copper coins to the same effect.I have a couple of farthings I bought from the USA,graded by NGC,that are quite colourful.You have me thinking now.I did wonder how they toned to the colours.

I have seen that kind of toning on coins bought randomly i.e. as part of bulk lots. Not common but it does seem to happen from time to time.