Serial number range: 593001-1152000 (1943-1954, approx. 5,000 produced). Production by year: 1943: #593001-593500 (500 units); 1949: #732001-732500 (500 units); 1950: #823001-824000 (1,000 units); 1951: #940001-941000 (1,000 units); 1952: #1008001-1009000 (1,000 units); 1954: #1151001-1152000 (1,000 units).