My silver coin forming a gold patina color!

[SilverPlatinum]

Hey Guys,

I had purchased this coin back in 2016 from the Canadian Mint: "1/2 oz. Pure Silver Coin – Maple Leaf Silhouette".

I'm displaying it in my presentation cabinet to show it to my nieces and relatives when they come visit.

However, lately I start noticing that the color is changing and it's forming some sort of a gold patina! (photos attached).

I think this is happening because the plastic capsule is not tight (as it's not round shaped)!

I really like this golden patina color right now and I want to "lock" this color before it turns black.

What do you think I should do? Shall I send it to either PCGS or NGC to get it encapsulated so I "lock" the color?

I also noticed a white spot (milk spot?) on it (not sure why that spot did not form a patina)!

This is the link on how the coin looks originally:

https://www.mint.ca/store/coins/12-oz.-pure-silver-coin-%E2%80%93-maple-leaf-silhouette-canada-geese-2016-prod2760018

These are photos of the current state:

 

 

[James32]

ITS A MERICAL!!

Wish my silver would turn gold lol.

[Petra]

No expert but getting it into a capsule probably won’t stop it, need to ask the people who do it. Either way it won’t stop the milk spotting and you don’t have to worry about the gold colour because your coin will end up covered by the milk spotting. Some mints silver coins are prone to it, something in the coin due to manufacture process 

[Arganto]

I wouldn't have thought that sealing it up would guarantee that the toning would stop at its present point. It's possible, but reasonably unlikely. Toning can start in sealed slabs after an immaculate piece has been encapsulated (there are threads on TSF about this), so it's not the case that a slab freezes a piece in time. Gold toning is rather pretty, nice old Sterling sometimes does this and it is something to behold. I'd just enjoy and see what happens, it's not guaranteed that it will blacken.

[Petra]

1 minute ago, Liam84 said:

I wouldn't have thought that sealing it up would guarantee that the toning would stop at its present point. It's possible, but reasonably unlikely. Toning can start in sealed slabs after an immaculate piece has been encapsulated (there are threads on TSF about this), so it's not the case that a slab freezes a piece in time. Gold toning is rather pretty, nice old Sterling sometimes does this and it is something to behold. I'd just enjoy and see what happens, it's not guaranteed that it will blacken.

Milk spots will get it first!

[Arganto]

33 minutes ago, Petra said:

Milk spots will get it first!

That doesn't necessarily spread though. If it is a manufacturing issue like borax not being washed off thoroughly then the spotting will only appear where the chemical is/was present. All depends on how it forms in the first place.

[SilverPlatinum]

17 hours ago, Liam84 said:

it's not guaranteed that it will blacken.

I hope so..... Then I might just put it in a regular round capsule like this one and see what happens.....

[Arganto]

Personally I'd leave it in the custom fit one, not often you see such a thing 😁

[westminstrel]

Your coin has character.  I’d leave it as it is.  It seems to be a natural process happening over time.  Looks cool. 😎

[Jpatem]

Wow, I didn't know about those Maple leaf coins.  Its beautiful and the gold tone looks bright gold to me.  I also say leave it alone.