Painting of Napoleon Bonaparte (18,000 Euro, 24,000 USD)

Collins Fine Art shows an 1813 painting of Napoleon Bonaparte after it was cleaned. The long-lost portrait of Napoleon which sold at auction for £15,000 (18,000 Euro, 24,000 USD) could be worth more than 100 times that after a deep-clean showed it to be the work of Jacques-Louis David, one of France's most celebrated painters.