So, here's a question I've recently wondered; how does one determine the quality of a toned coin? In other words, if I desired to purchase a great toned coin, what should I look for? Even coloration? Are certain colors of tone on a given coin more difficult to find than others, or does it even matter? Suggestions on how to over look the tone to grade the coin (because for some reason I'm always focused on the tone coloration and luster than I am about the highlights of the coin itself when viewing a colored coin). Any suggestions you could provide as to what may be the hallmarks in what to look for in a toned coin would be great. Thanks.
Look for the ones that look good to you after, Look for the ones that look good to you after looking at a few thousand both artificial and natural then decide for your self. Note the ones that sold for great premium's in the market. Learn how coins tone and why. Learn the spectrum of colors and how they progress. Look for not only beautiful color but absent of spots of other (maybe partially hidden) distractions. Tone some your self to learn how this from of artificially toning happens. Just get some BU memorial cents and a pan for frying and see what you come up with. The monsters in the market are generally Morgan Dollars that have laid against the cloth bag for decades and have rainbow type toning across the intire (or at least 75% of the obv. from what I've seen. Hope this helps.
certified Great advice by bhp above, and I'll also add that for someone first starting out with toned coins, stick with certified coins (slabs) by PCGS or NGC. This gives you a good deal of confidence that you won't be buying an artificially toned coin, although not perfect, it's good protection. After looking at many toned coins, you'll develop an eye for those toned over many years of storage versus the "doctored" coins. And yes, the Morgan dollars are a nice series for rainbow toned coins, but be careful how much of a premium you pay. Some dealers ask ridiculous prices, so shop around.
Go to the Heritage site and look for Morgans with the "*" designation. They are usually high luster coins with rainbows. But just remember, toning is damage to the coin's surface.
By picking out one that YOU like. Toned coins are like women. What you may find beautiful, I may think is ugly. So get one you like, and forget whatever anybody else likes.
If the chatter on the PCGS forum is symptomatic, it seems that what was considered market acceptable ( PCGS gradable) in the past is not so much today. Looking at slabbed toned coins will help, but be aware that a higher % of similar are now coming back from TPG with QT, genuine, or other markings without a grade. If you buy one you like graded in a slab, I would keep it there and not crack out or try to regrade at this time. IMO. Jim
If you are curious what grades are being given by PCGS, here is a link to those orders that the submitter allows to be shared by others. I am not sure if you need to be a member of the PCGS club or not for it to work. I am, and it does for me. http://www.pcgs.com/membership/Shared.aspx Jim