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Found 2 results

  1. The worlds three top grading companies all offer a restoration service. PCGS call is "Restoration service', NGC call it "Conservation", ANACS call it Conservation and strongly deny its a restoration service. They all claim that they remove harmful contaminate from coins to protect the surface. They all state they do not clean the coins they simply remove surface particles including glue, stains, hazing, dip, corrosion and PVC residue. Here is a before and after picture of a US 5 cent shield nickel from NGC I have been in the industry since I was 10 years old and after over 40 years still heed my grandfathers advice "Never clean a coin, you don't own it you are just a caretaker until it is sold onto another generation". I am not sure how I feel about this. All three companies will (Unlike Mickey Mouse graders like ICG or CGS) spot a cleaned coin, I find it hard to explain the difference between cleaning and conservation to my customers when I don't really understand it myself. Worst still, once they are conserved/restored they are then graded with zero mention of this. This does not seem right to me or am I just old fashioned?
  2. Nightvision

    Rust deposits

    Hi again, I was gifted another mixed bag of predecimals this month. Got all excited. First item out of the bag was ... a rusted dog tag. Heart sank. I now have a bunch of coins with rust deposits partially obscuring everything. I attacked a few with acetone, a cotton wool bud and a cocktail stick to see what would happen. After three hours work I was able to rescue most of a german 5 pfennig but got quite high during the process so I'd rather not repeat it. (I'm kidding, the room was ventilated - I just got really bored). Next step, olive oil bath. Or will that most likely be a waste of time too? All tips gratefully welcomed.