Winchester Model 70 post 64era 30-06 Serial #'s

Just purchased an awesome Winchester Model 70 30-06 (post 64era) and was wondering if there is a listing somewhere to find out an approximate year of manufacture?? Any guidance would be greatly appreciated. My Serial # starts with a G

Dont know if this will help but armscollector.com they have manufactor dates.Or check the gun value book in the back.

Go here and you can get all the Winchester MFG dates..

http://armscollectors.com/sn/windates.htm

THANK YOU for the Winchester website. My new rifle is a 1974 model.
ksbracing.......keith