Blue toning on silver coin...natural?

No. This coin, although NOT completely ruined, as some still find it appealing at least, is artificially damaged by chemical exposure. You can describe whatever conditions before and afterwards that you care to, but you simply can NOT escape the obvious chemical stripping and coloration. A few caustic rounds in the washer will do a lot like this. Yet, this is something even "worse," though a few seem to label it as "better". I tell you latter folks, it is OK to enjoy damaged coins; just don't overpay for them. You can do this to a coin yourself for free.

 

Log in or Sign up to hide this ad.

Some blue can be attractive, from just the right angle.

 

I personally love the coloration of this coin

 

Blue toning on silver?

Sure. Have you ever seen your wife's tarnished sterling? If she still has any.

The classic original Proof coins often have blue color on them.

Having said that, I don't like the OP coin. It looks to be artifically toned to me. It's too dark and just doesn't look right compared to other pieces I have seen.

 

Blue toned South African coin ... toning started on obverse. The coin is stored with reverse side facing upwards