How to tell the age of a winchester?

Hello all, I recently acquired a model 94 Winchester 44 magnum lever action , Id like to know how to tell the age of it, I'm assuming you tell through the serial number but I'm not sure? Thank you guys.

http://oldguns.net/sn_php/winmods.htm

I'm sorry, its the Winchester 94AE 44 mag and I'm not seeing a listing for it

http://oldguns.net/sn_php/windateslookup.php?file=win1894.dat

yea it keeps telling me that the number isn't in there database, try it 5379550

1985.

http://www.winchesterguns.com/content/da...d-Documents.pdf

Sounds like a nice gun!