Powder flask needs help

[rickystl]

Hi Kubur.

Nice looking flask. Even has it's original stopper, that are usually missing.
Well, we know the body is made of leather. I think I would try Richard's suggestion first. It looks like it is mostly old dirt/dust left to harden over the years. You might also try a mild soap, or saddle soap on a small area without the paintings, and slowly go from there.

Rick