What is the age of Colt Walker serial number 3794?

Bad news - there is no Colt Walker with that SN. Good news - you might have a 1st Model Dragoon made in 1848. Medium news - you could have one the reproductions that Colt has had made ove the past 30 or so years. They run about 650-800. Look it over carefully, if it is a reproduction, there will be Italian proof marks on it.

Colt's records show that yours (sn 3794) is one of 2,573; manufactured by Colt from 06/80 to 04/82.