I had 280 ,50 pound notes , that ,money exchange's ,Banks ,would not
exchange over the years , because of writing on them ,as they were
been taking out of circulation , I got to cleaning them up, used vinegar
and washing up liquid , took some time ,but finally got them where they
looked OK to me, took them to exchange and was relieved that they
changed the lot.
Had a problem once in Indonesia ,had Thai Baht ,not in the best condition,
none of the exchanges in the malls , shopping centres would accept them,
I was directed to a small exchange who took them but at a discount.
If bringing cash into Thailand always make sure it's clean ,no writing,
no tears, it will save you hassle , funny you give them clean notes ,but
give you grubby Thai Baht........
regards worgeordie