Any reason that you don't like the ones with more than one color? I don't love all of them equally (I'm collecting the whole set), but I do find the 2015 to be a pleasing example of two colors.
Matter of taste, which there is no accounting for anyway. For some reason I like bimetallic coins but am not a fan of "multicolor" coins, no matter what technology is used for creating the color effect. So when the Austrian Mint came up with their 100 schilling silver/titanium coins in 2000, I found those interesting, and the first silver/niobium coins I considered to be a modified continuation of that series. Those I wanted to have. The newer ones ... let me put it this way: If a sculptor uses color, it can be interesting, see Niki de Saint Phalle's works for example. But I prefer a sculpture, its shape and design, to speak for itself. Christian
Ha, that foot I know. The French mint used it on its 2009 issues (some of which were already dome shaped). This is another thing that I find "difficult" when it comes to such collector coins: You can create all kinds of effects and gimmicks, and some look really cool - but for me, coins are still primarily means of payment. Would I want a dome or cube shaped €2 coin in my wallet? Nah ... Christian
Some collectors greatly admire this Dolly Madison commemorative silver dollar. Tiffany & Co. was involved in the design.
That's fair. I like the titanium ones as well. I have the 2000 and 2001 in my collection (it's too bad there was a gap year in 2002 before the niobium ones started in 2003).