NEW YORK, NY (REUTERS).- Sotheby’s hopes that the fervent mood at an auction this week in London of important Old Master paintings will travel overseas when several rare art works will be auctioned next month. The fragile state of the world economy didn’t influence the few deep-pocketed art collectors who vied for rare 17th century masterpieces in the British capital on Wednesday. Sotheby’s sale of Old Master & British Paintings in London saw a new auction record set for Anthony van Dyck when his last self portrait soared above expectations and sold for$13,521,704.