Wreath Crown - Horrible Discolouration

[Coys55]

Anyone know what the uneven, patchy discolouration on this wreath crown could be and if it may be possible to rescue it (i.e. clean it) from its present sorry state?

It doesn't look like normal extreme toning to me and if it had been left in a draw for almost 100 years I would have expected the discolouration to be more one-sided than almost completely even. 

Although it looks horrible like this, beneath the crud it looks pretty good. Maybe even EF+?

Oh and I'm assuming it's OK...

 

 

Edited 1 hour ago by Coys55
Errors

[wlewisiii]

It pings like silver I suppose? Perhaps have it tested to ensure it is actually 50% silver? I wonder mainly because that appears to be 1936 and there were only 2473 of them minted so it would be a prime target for fakes, then and now. 

Presuming it's real, there is ~40% copper in the alloy of these, perhaps that's what is causing corrosion? It's just a guess as I've never seen a coin look like this. 

[Coys55]

It’s a 1932, mintage 2,935. 

I don’t own it,  but am thinking of bidding if it’s probably OK (although I’d be covered if it wasn’t) and recoverable from its present state. 
 

it would be a pity if it is OK but not restorable. 

Edited 1 hour ago by Coys55