Mayor of Florence Matteo Renzi (C) gestures next to a researcher working on the "Battle of Angiari" project, a search for the lost Leonardo da Vinci fresco, in Florence in this handout picture released on March 12, 2012. Art researchers and scientists said on Monday that a high-tech project using tiny video probes has uncovered evidence that a fresco by Renaissance master Leonardo da Vinci lost for five centuries may still exist behind a wall of Florence's city hall. ONE-TIME USE ONLY. REUTERS/Photo by Dave Yoder/National Geographic handout/Handout (ITALY - Tags: SOCIETY) NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. ONE-TIME USE ONLY
Researchers work on the "Battle of Angiari" project, a search for the lost Leonardo da Vinci fresco, in Florence in this handout picture released on March 12, 2012. Art researchers and scientists said on Monday that a high-tech project using tiny video probes has uncovered evidence that a fresco by Renaissance master Leonardo da Vinci lost for five centuries may still exist behind a wall of Florence's city hall. ONE-TIME USE ONLY. REUTERS/Photo by Dave Yoder/National Geographic handout/Handout (ITALY - Tags: SOCIETY) NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. ONE-TIME USE ONLY