I was so sure this was an MS70! It is, I believe, perfection but I'm very happy to consider it as an MS69PQ in my numismatic book. I know platinum doesn't tone but this one appears to be starting to do so.
The 2005 $10 Uncirculated Platinum Eagle has one of the lowest mintages in the series for the $10 Uncirculated Platinum Eagles. It can be considered to be underappreciated as it trades close to all other dates from the same denomination. It's price is usually close to the spot price of platinum as well making it an easier decision to buy if someone likes to buy platinum.
Most 2005 $10 Uncirculated Platinum Eagles come well struck ranging from about MS67-MS69 condition. Very nice MS69 examples are harder to come by. In MS70 they are somewhat scarce but for a decent premium an example can be purchased in MS70 without too much difficulty.