Hi fris ... for regular coins it would be in my sig ... otherwise Google 'double headed coins' and you will find some. I've had the novelties in the past but don't have any at the present although I'll look through my junk boxes to see if I overlooked one.
Oooops, not in my sig here but here is my link:
http://www.babcockpublishing.com/coins/index.htm
jerryb