I'm just a numismatic newbie and i'm italian. I just want to ask which is a good price to buy a NCG MS70 10$ Platinum Eagle 2002. I saw on the PCGS price guide and it says that this coin is worth 1550$. How much could a NGC MS70 be worth? Thank you Vincenzo
Here is what I see on Numis-Media Fair Market Value Online Price Guide for MS70 $325.00 and PR70 DC $405.00 . Maybe I missed something!
Howdy Vincenzo - Welcome to the Forum !! There are two currently available on ebay, both are Buy It Now. One is priced at $244 - the other at $399. There is another that recently sold for $306. All coins are 2002 $10 platinum slabbed by NGC as MS70. What that tells you is that the price can be all over the place for these coins - it just depends on how greedy the seller is. So unless you really want that MS70 very badly, save yourself some money and buy a MS69
Here is a question I didn't think of before. Maybe I should know the answer, but I don't. Maybe I knew the answer, but forgot. Do platinum coins tone?
Platinum is like gold, most will tell you know it does not tone. I will disagree and say it does. It doesn't tone like silver, it is much more subtle. But it tones.
Platinum is a noble metal. Like gold and palladium, it is resistant to corrosion and/or oxidation. These metals were called "noble" because it was believed that the only people that could afford these metals were people of nobility. With that said, the only time you will see noble metals corrode and/or tarnish is when they are alloyed with large amounts of other "active" metals. For instance, in Europe, they tend to add more copper (as high as 35%) to their 14kt jewlery mix (which is 58.333% pure gold). This type of jewlery looks more "rosey" than 14kt gold alloys with only 20% copper. If you in an area with a lot of sulfur in the ground water (like central Florida), you will see this type of jewelry discolor frequently. Even worse are people that have these type of gold/cooper crowns in their mouth. Drink some of this sulfide waters and/or high concentrations of ice tea (tanic acid) and your gold crown will in fact discolor. So, I bring this up because if you alloy a noble metal with an "active" metal, all bets are off...but I seriously doubt that "noble" metals in their pure 99.99% form will ever corrode and/or tarnish. It is one of the reasons why they are great for hypoallergenic cases which basically means, they react with nothing else!
