Early Chevy VIN plates look like this: NN...XX...nn...ssss

NN = Assembly Plant (There were 10 different ones)
AH or AG = Year and model code (AH = 1941 Special Deluxe, AG = 1941 Master Deluxe)
nn = Build month
ssss = serial number

If your VIN plate doesn't match this formula, but the number matches your title, you should still be good to go.

This is a good site for all you stovebolt Chebby fans:
http://chevy.tocmp.com/chevyresto/index.htm