A couple of years ago, at an auction, I bought a NGC graded coin. After I removed the inventory tag it left a stubborn residue on the NGC case. I put the coin away. Ran across the coin today. I bought a bottle of Goo Gone to remove the residue then thought that may not be a good idea. How can I remove the residue without damaging the NGC holder? Thanks
Don't use the Goo Gone,,,,It might mess up the slab. I had the same problem a few years ago,,,What I got was a product called ...Slab Renew and you can get it on ebay for around $15 bucks,,It's a bottle of what looks like liqiud car polish and it would take a few tries to remove the old glue from the slab but it does a very good job of it plus it will remove minor marks and make the slab like shinny new, you have to get a shame cloth or rag like the ones used to polish a car.
I would try alcohol first. IT does not work on all, but many it will take off and it does not harm the slabs. Sometimes a little elbow grease using alcohol on a tissue will also work. Do not use acetone!
The few times I had to clean goo off a slab I used a automobile bug and tar remover Mike. I sprayed a little on a rag and rubbed it on. The goo came off easily and it didn't hurt or discolor the slab at all. A coin dealer friend of my gave me that tip years ago. Bruce
Vegetable oil is gentle enough for most plastic, and works for some stickies that even alcohol doesn't budge.
Goo gone, alcohol, or even vegetable oil will work (but you would then have the problem of getting the oil off) one word of warning though, do not let the goo gone, alcohol, or oil get on the seam of the slab. If you do and there is an opening in the seam it will be drawn inside the slab and you won't be able to get it out. DO NOT use acetone on a slab, it will etch and cloud the surfaces.
Coins and slabs scratch easily. I would never use "elbow grease" type pressure to clean either. Maybe if I was waxing my car I'd use a little elbow grease. Rub softly.
Coins? I would never recommend rubbing a coin. Period. As for the slabs, yes they scratch easily if you use something that will scratch them. A tissue with alcohol will not. If you have ever used Scratch Out, you really have to work with that stuff, but it does not scratch the slab.
Goo Gone did a great job removing the tape residue. However, because I was too aggressive rubbing the slab the friction left some fine scratches. Since I had the GG open I also cleaned up some other stuff that needed it.
