Mr. Bali Hai

I've been bitten by the Tiki Bug. My question, I've been looking on E-bay for an older Mr. Bali Hai mug. I've seen two, one a little smaller with a kind of flat bottom and the other I've seen has a concave bottom and is about an inch taller. Does anyone know when each of these came out and wich one is older?
Thank you,
Ed

I asked the very same question a few months ago, concave bottoms older, much more discussion on it here..

http://www.tikicentral.com/viewtopic.php?topic=1536&forum=5