What Is Your Dream Coin?

A high grade gold aureus of either Trajan or Hadrian.

Later in life I may sell a good portion of my collection to get the money to purchase one.

I would be game to receive a Panama-Pacific $50 any day, but this coin has caught my fancy as of late:

http://en.numista.com/catalogue/pieces25040.html

There are many, many different varieties, but these oversized gold Pringles from feudal Japan have always captivated me. 165.56g of gold! The hand-added lettering also gives these a rugged beauty; the Japanese certainly prize the quality of their craftsmanship in all aspects of life.

Other than those two, a nice gold Greek or Roman coin would always be nice to own. I don't particularly care about rarity so much as history and craftsmanship--the Greek engravers (both in their homeland and employed at Roman mints) were unparalleled, and the loss of their secrets was one of the biggest blows to numismatics as a whole, IMO.

I would not refuse it if offered.

ASE 1995w PF70

The 2003 Canadian gold one dollar coin, which celebrated Queen Elizabeth's 50th anniversary of her accession to the throne.

My goal is to acquire every post-1968 Canadian dollar, and this one will be my toughest one to get.

The Parmalee-Reed specimen of the 1804 silver dollar.

1796 or 1797 Small Eagle HE in a nice, original AU grade.

ET

This one http://en.numista.com/catalogue/pieces43776.html.

It's a very elegant coin, has a very small mintage (just 99239 pieces) and, also, historically marked the beginning of a new era. I'm still trying to get my hands on a FdC, which shouldn't be impossible (just about $700 or so), but there are also known to be a lot of fakes around, which makes me a bit careful: I won't order this one over the internet.