WWW.CIRCLINE.COM Founded in 1997 and headquartered in New York with branches in London and Paris, Circline is an on-line vendor offering more than $300 million (all currency in U.S. dollars) worth of fine art and antiques. Browse by style, country of origin or price range. All prices are guaranteed for authenticity by the more than 700 dealers listed on the site. Arts and Antiques Prices are steep, making this a fantasy site for most. Average price is $33,000, although 50% of the items are $10,000 or less -- vintage American war posters were in the $700 range. Dealer Network An international collection of dealers participate by invitation only and sign certificates of authenticity for all items listed. Canadian content exists; we found a 1920 Birks diamond and platinum brooch at $7,500. Education If you have a historical query about, say, Russian cabinetmakers or Chinese enamel vessels, e-mail the Circline education staff at . Request Circline searches its list of dealers according to your interests (as general as American photography; as specific as mahogany Hepplewhite sideboards from 1810). The site will e-mail you when a certain piece is available. Portfolio Sign up; registration is free and entitles you to frequent updates on pieces, featured collections and special offers.