Bronze desease?

[Nikko]

I'm not sure if those turquoise areas are traces of bronze desease or simply patina.

Thanks
Nicola

[Lee S]

Your coin looks wonderful!!! Wax it, ( if you wish! ) photo it, and store it for your and future generations enjoyment... and great work if you cleaned that yourself!!! 

[Mayadigger]

Ave!

It's BD, for sure. Just a few drops of GG's BD Killer, a few gentle brushes and time will cure your coin. Applied to just the BD spot, the rest of the Rx patina will not suffer.

Best,

Kevin

[Aktina]

I second that. Begining BD

[Arados]

Two very respectable coin conservationists with entirely different views, any chance of you both giving your reasons for your difference in opinion ?

This could have a baring on whether Nicola needs to treat the coin or not.

Arados

[areich]

I don't think it's BD. It's not clear in the picture but I don't think it's actually eating into the coin.

[Molinari]

I don't think it is BD either.  Not everything that is that color bright green is BD.  At most keep an eye on it and see if it changes. 

[Lee S]

In my opinion IF the green is BD ( which is by no means certain..) it only exists on the surface of the coin and is not active under the patina, which in my experience is when BD is dangerous...
   I would ensure the coin is thoroughly dry, then wax it and flip it... Of course keeping an eye on the coin for any changes, but I personally think this coin is stable... Such a tiny touch of green is not really (IMHO) cause for concern...

 Lee.

[Bill W4]

I'd poke at it a bit and keep an eye on it; but I wouldn't be too concerned.

[Akropolis]

Poke it with a sharp toothpick. If powdery green material appears on the coin or toothpick, it is BD.
PeteB

[areich]

If it's the type of encrustation I'm thinking about it will be fairly soft but still no BD. It should be removable but I would not treat this coin with the kind of harsh chemicals that will needlessly damage its patina. Often the cure is worse than the disease.

EDIT: fixed some typos

[bruce61813]

If it's the type of encrustation I'm thinking about it will be fairly soft but still no BD. It should be removable but I would treat this coin with thekind of harsh chemicals that will needlessly damage its patina. Often the cure is worse than the disease.

Unless it is BD, then ..... I would follow Kevin's advice.

Bruce

[areich]

Are you saying it is BD?

[bruce61813]

Could be, the color is right and there is a bit of crust that looks to be more than just dirt. but it is a guessing game. I tend to treat all suspicious areas as BD.

Bruce

[SC]

Funny how many different views we all have to what is basically the same problem.

I too think it is likely early, surface only, BD.  Personally, I would not give it any chemical treatment at this point but I would not wax it either.  I would brush it with a hard nylon brush - a cut down toothbrush.  I would also poke and clean a bit with a toothpick.  Then I would leave it and monitor it.

Down the road it would either get waxed if it continued to look good or get a chemical bath if it appeared that it might degenerate.

Shawn