Finally the official recognicion from the Guinness World Records™ :
The most champagne bottles sabered in one minute is 47, achieved by Mirko Rainer (South Tyrol) in Mendrisio, Switzerland, on 6 September 2014.
The saber used by Mirko was a purpose made champagne saber, which has a blade measuring 15 in (38 cm) and was made by Consigli in Italy.