What is your favorite coin?

We have been posting information on coins as they come out, and have been mentioning older coins, along with occasional coin information posts, and now it is time to ask, what is your favorite coin?  We have seen many beautiful coins over the years, and most are attractive, but different people have different ideas.   we are curious.  And, we can seek coins our readers are looking for to list at

Black Spaniel Gallery Coins

Please notice I have not restricted you to U. S. coins.  The Perth Mint in Australia colorized coins splendidly, the Royal Canadian Mint are arguably the best at holograms and crystals added to coins, and the Japan Mint is currently making a wonderful series depicting every prefecture of Japan.  Or, are you loyal to the U. S. Mint and its products.