Collecting old notes and coins

"Thirty-eight hundred in the room. Four thousand on the net, 5,000, 6,000! Bid, bid, bid!" the auctioneer calls out. His voice carries that sing-song quality that all auctioneers seem to have been trained to possess but it's one in the afternoon, four hours into a rare banknotes auction and it's starting to show a slight bit of strain.

via Business feed http://www.scmp.com/business/money/spending/article/1141215/collecting-old-notes-and-coins