how to remove a rust stain?

[poppym12]

From a fluffy 'professional dry clean' only coat?

The coat wasn't expensive (sale bargain) but it's really warm and although it makes me look like a stuffed sheep, I like it.

There's a 2" rust mark on the shoulder blade area. No idea where from . As it's fluffy I've snipped off the worst bits and refluffed it but I can still see a faint orangey tinge. Any ideas please?

Salt and lemon juice. Possibly the mark is from a coat hanger?

Yes, I think it must be as it's been hanging in the understairs cupboard all summer.
Do you mean mix them together and apply? Then what?

Dampen with lemon juice then gently rub with salt.