Hi uwharriechair, is this a "one off" situation, like you just want this one carving duplicated or are you planning to do other duplications as well?
Why I ask is if it's just one , it might be cheaper to farm the job out, duplicators are not cheap even ones that have only one spindle which do one at a time.
Anyway here's a couple of suggestions, first is a manufactured duplicator for one at a time carving, the second is for a how to make a home made duplicator.
Also if you provide soem idea where you are located in the world , someone else might have a local suggestion for you.

There are some people in the carving community that provide this service as well, one that has already been mentioned on this forum(Goody) , he might have some ideas or suggestions for you.
http://www.terrco.com/ter_6.htm
How to make a duplicator
http://www.fishcarver.com/wood_carving_duplicator.htm 
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OG