1979 or 1980 ktm 250 GS

[enduro_1980]

I got a ktm 250 gs. It has a 6 speed, 38 mm marzocchi, aluminum swing arm, rear frame loop, vdo speedometer, big tank with 4 bolts for the tool bag. No title.
Vin number is 9088786 I found out it was build in august 1979 but I can not really tell if it is a 1979 or 1980 model. The engine number is 9 5425153. When do the factory start the new year production?
Could you get a gs from the factory or they came as MC and the buyer could get a enduro kit.  
So if someone could help me determine the model year?

[skiracer]

Does it really matter which year it is?  It's a great bike, enjoy it!

1976 250 MC5 Original Owner
1976 Penton 175 XC

[Bob Seymour]

Very little if any differences between the 79 and 80 model years. There might be a slight difference between the plastic side panels,and definitely the decals, but they are interchangeable between the years. All the structural items like the frames,swingams,forks ,shocks are the same.

[marsattacks]

If you want to invest the time to navigate this site there are many photos of 1979 and 1980 KTMs.  It is not simple but not hard either.  It will take a little time.  Good luck.

http://web.tiscali.it/ktm70pages/