You know, I don't believe it is, as the bike was repainted and it has faded from gas leakage on top, and they painted the frame a dark blue also... along with the battery box, swing arm, etc. The one side cover was a K1, the other was missing, and it was blue also. Am thinking they just repainted it to make it presentable, and the fellow liked blue lol. I would really like to repaint the tank and the two side covers I now have that match, the original oil tank cover was broken in multiple places, and I am not going to reuse it. So, I believe the tank is a 1971. The HONDA logo on each side looks to be held on with adhesive, as I can't see any screws that would attach them! Not sure if that is stock either as I thought they would have been attached with small screws. But the logo's are in great shape!
Charlie