There are two possibilities. Madis says that some Model 55's were numbered in the 94 series, which would explain your high number; sorry I missed that the first time. Another is that someone put a Model 55 barrel on a 94, easy to do as the guns are identical except for the barrel and magazine.
If it is a Model 55, in the Model 94 series (which I think is the more likely explanation), the date of manufacture (by coincidence) would still be 1929.
Jim