I agree with Kommi, the frame at least looks kinked just behind the down tube head lug. The bike is supposed to be Gran Sport equipped. The shifters are GS, the hubs are Nuovo Tipo, but the front and rear Suntours are not original. It was reasonable to replace those Gran Sport parts with Suntour at some time in the bike's life, but now seems regrettable.
My kink ratio is very low, so I really believe this frame needs to be checked carefully.