I use Artprice. The last time I used it, you had to pay a dollar per artist. Then you had access to information about the kind of work (oil, watercolor), size, estimate, sale price (not always) and sometimes there is picture. You can put names on a list and they will email you when items are about to auctioned by that artist (this is free).
Mydogs, I have a French pastel from about 1885 that really seems to be in the the style of J.S. Sargent. I need to have someone look at it. Where should I take it? Thanks!
