Help locating a c.321?

Hello gentlemen:

I'm a former (unofficial) member of OSPOG, having owned a '57 re-issue for 4 wonderful months. I sold it to acquire a Minerva Palladio DT a few months ago, but lately I've come down with a serious jones for another Speedy (Pre-)Pro, and I find myself gravitating towards a c.321. In part this is because it's a column-wheel movement, and in part because I was born in '68 (now THAT cat's out of the bag) and would like a watch of my own age. I've seen a couple on eB@y lately, but do you know of any other decent sources? Unfortunately, the market here in Denver, CO doesn't afford much in terms of selection or quality.

Thanks in advance for your assistance,

Craig Christensen