Coin that has NGC/ Details/ cleaned

It carried over to this country, the colonists clipped silvers.

 

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..i'm late to the conversation but...yup..

 

If these are rare in this grade I would bid on it, just adjust accordingly. The cleaning makes no difference to me.

 

Interesting. I never realized there is nearly a millennium of coinage ineligible for grading. Sounds like an opportunity for someone.

 

I would never clean a coin with any historical value by myself, but I have no idea who I could get it to do it for me, I don't know know of any top professionals in Croatia who offer such a service, and I have absolutely no intention of sending any valuable coin halfway across the World to the USA or wherever.

 

Have you ever had a gold coin professionally cleaned? Specifically to remove a dirt spot or line without damaging the coin? I would like to safely remove the dirt line (seen left of centre on the obverse in the picture below) from my Shah Jahan mohur if possible.

 

Yes/ once I won a 1745 Dukat from Schwabische-Halle in FDC/ it had a tiny deposit on reverse legend. I asked auction house to see if they could remove it/ they did!
Deposits are not hard, but some collectors have more money then common sense. Case in point, a US collector bought a MS-64 1850 Double Eagle/ thought he should remove coin from holder/ first mistake. Then came a "dumb and dumber" move. He polished it to make it shiny. Thus a 50K coin became a $2500 bullion coin.

 

As I already wrote, I would never clean a coin of great historical value by myself, and not because of its monetary value being reduced (I don't care about that, since I don't plan on selling any of my coins of historical significance), but because I don't want to ruin it.

 

Is there any trustworthy coin cleaning company in the EU?

 

Its called coin "conservation". I would say most museums would have qualified experten. Its pretty much common sense, you can remove deposits by placing coin in warm water for 48 hrs/ for ship wreck coins with encrustations/ saltwater residue its more tricky.

 

If it is so easy and safe, then why is the market full of coins with horrible deposits? And I don't mean the ones that would be worth little money even if they were in pristine condition, I mean the ones that would be worth over a thousand euros if they didn't have the deposits and the ones that can be sold for over a thousand euros even when they are full of deposits, but could be sold for several times that if the deposits were removed.

 

Well for one thing, collectors of ancient coins have an extremely high tolerance for deposits. If you view coins as archaeological artifacts, they don't need to look "perfect" in the way modern coins do. As far as your coin goes, panzerman's suggestion is a good one. Soak the coin in water for a few days - make sure it's distilled water so that it's as clean as possible. Then try to pry off the dirt with a wooden toothpick. Don't use anything metal, or it may scratch the coin. That technique is totally harmless. If it doesn't work, then you go to plan B.

 

The vast majority maybe do, but I am not one of them.

Thanks, if I manage to find a cheap gold coin with deposits to practice on, I will try that, and if it works without damaging the coin, then I might try it on the Mughal Gold Mohur of Jahan.

Okay, one more question, under the assumption that this would work, how do I dry the gold coin after I take it out of the distilled water and remove the dirt?

 

I didn't know that Byzantines were ineligible for entombing. I like them even more now!

 

They are often graded and slabbed, the gold anyway, sellers maybe think it will increase the price. It's just that the coins contemporaneous with Byzantine usually aren't. But you can carry on liking Byzantine coins anyway!

 

Yeah, I just remembered, Al Kowsky has posted some slabbed Byzantine coins.

I think I only have one details slab, a silver Magna Graecia with 'smoothed', which isn't a great detail to have on a silver. It was a Christmas present from some years back. My only slabs are presents.

Too bad that many don't have basic details like weight, size, or a basic reference. But we have the grade!

 

I would use a hair dryer/ or place coin on tissue paper let it dry naturally.

 

The bolded had occurred to me, and it is probably a better idea than the hair dryer (especially since my Panasonic hair dryer is quite strong)...