Door mouldings are an Alfa accessory, but very few 147's are fitted with them as they tend to ruin the look of the car. The ones in that photo do look like the genuine article. Rusty back box is very common on most 147's - the outer skin rusts very quickly but the boxes tend to last for years, if youre prepared to ignore the look. Paintwork should not be very orange peely - black does tend to show any paint imperfections more than any other colour, but it might suggest a respray. If the car has got a full history and had cambelt changes every 36k miles (that can all be verified), I would not dismiss it at that price - if not, I would walk away. Might also be worth verifying MOTs, mileage and insurance history.