My 156 was driving around without a tow cap for several years. No problem with the car, it needed towing up a big hill in snow, and when the cap dropped off somewhere in a mile of snowy road, I couldn't be bothered to go and find it.
Can't really see if the bonnet is dodgy in the photos, but that could be an easy discussion point with the dealer. If they claim that it has never been smashed, then they are lying curs and you either negotiate or walk away. If they say "sure, it was involved in an accident, the receipt for all the work is in the file" then that still may be a negotiation point, but less of a big deal.
Very hard to judge a car by photos. I prefer to take it for a proper test drive - a good 20 mile spanking shows up most problems.