A Genteel Tmprovement That may be the normal thought process in your "crowd", but when my "significant other" returns after her long day in the coal mine, I find that a shower with soap application and some shampoo generally is an acceptable improvement. NCS efforts with subsequent NGC grading isn't "rocket science", and acceptably condoned as less than an "acid bath" by many critical of cleaning. I believe that proper "conservation" is an acceptable improvement for the normal collector, or sales of TPG "mint state" certified century old coins would be virtually non-existent. Let's consider applying a reality check to our comparisons.
Well I thought that "Coin Geezer" would be checking in on this thread. After all he was the originator of that thread about cleaning coins with an orbital sander... I experimented for a while with dipping coins, had a few successes that spurred me on to more attempts that did not work out so well. Gold coins, for example, look a lot better in water than after you let them dry. So dipping them or using soap, etc., while not advisable does give the illusion while wet that the coin is better than it is. I let NCS do most of the conservation work these days. Too bad we don't see demos at coin shows on cleaning coins the right way.
Probably not. One of the leading dealers in PQ coins on Coinplex insists gold and silver certified coins he buys be "brilliant", "white"( in the case of silver), and without spots. That is the trend in high end material.
One thing I wonder about using the term "conservation" instead of cleaning. You can call cleaning anything you want it is still cleaning. We know there is a difference between cleaning and harsh cleaning. Soaking coins in distilled water or acetone may not be harsh but it is still in fact cleaning since it gets rid of surface dirt and can leave pits. Sometimes cleaning is required, especially if gunk is covering the date or mintmark or there is verdigris that can damage the coin. Calling it something else doesn't change that fact that you are cleaning a coin.
I think they should call it proxy enhancement since they would not even be business without demand from collectors to improve their coins. But it's still cleaning to me as well.
What's the matter Ruben, you running of somebody to argue with ? Tell ya what, I'll say forth, and you say back. And we can go forth and back. Bet ya didn't know that did ya ? Most folks say back and forth don't they. But they are wrong ya see. For you cannot go back until you have already been forth. So the correct usage of the saying is forth and back - not back and forth