Lockheed L-049 Constellation

Lockheed. A piston airliner.

Seats: Mixed 44, Dense 56
Range: 4,800 km
Cruise: 450 km/h
Payload: 7,500 kg
Take off run: 1,500 m
Fuel burn: 820 kg per block hour
Reference price: $750,000 in 1947 dollars
Production ends: 1946-12-31
Confidence: estimated (to be verified)

Source: TWA received the first civil Constellation on 1 October 1945 and began Atlantic service on 6 February 1946; Air France took its first L-049 in June 1946 (Wikipedia, Lockheed Constellation, https://en.wikipedia.org/wiki/Lockheed_Constellation). Performance and costs are estimates.