Watch out there. There's a guy I know there whose family sells replica antiques and he dabbles in replica coins (basically he'll copy anything that'll make him a buck - ducats, reales, anything of high karat gold - and sells them as if they were the genuine article) so check and double check the coins' edges for mould parting-lines or machine tooling and especially buffing and cleaned coins. If you want more details, Slur, PM me, I'll be happy to help you out.
Basically gauge your coin dealer with some specialized questions to see what type of knowledge s/he has and if they pass your test have at it. Both of you should come to the same understanding about what you're dealing with.