surface rust or patina?

Don't you hate it when the wind picks up and you can hear the tarp blowing.  You know the damage the rain can do in minutes . 
 If it happens to someone else and the damage isn't too serious it can make for a great deal.  I might try to take a look at this one over the holidays.  A 49-52 Chevy coupe has been on my list.  Actually I drove over 3 hours to look at one several years ago, made an offer, got turned down and bought a 51 Buick instead - in hindsight it was a good deal for me - the Buick was a better car than the chevy and the road trip was great.  1949 Chevrolet coupe