Water excavation: the propeller of Lublin R-VIII (October 2015). The propeller was unique for Polish constructions of this period: a huge (4,2m; 85 kg!) fully metal  one; produced in France by Pierre Levasseur, working with Hispano Suiza 650HP engine. Photo presented by courtasy of Jacek Dzienisiuk, finder of the propeller – many thanks! October 2015.