Datsun does not build many cars like the Datsun Type 12: a phaeton, roadster, sedan with 747 cc DAT SV I4, built from 1933 when streamlining and independent suspension were arriving together.
The engineering
Under the skin sits 747 cc DAT SV I4. Kerb weight is 400 kg. The gearbox is a 3-speed manual. The layout matters: a front engine drives the rear wheels, the classic proportion — long bonnet, cabin set back — that most people picture when they picture a sports saloon or a grand tourer. The wheelbase is 1880 mm. These are manufacturer figures carried by Wikipedia and Wikidata, not road-test measurements.
Where it sits
Where it sits in Datsun's history is not in doubt: the Datsun Type 11 came before it; the Datsun Type 13 followed it; it was built at Yanase Motor/Nihon Jidosha Corp.. On a showroom list of its day it stood against the Bugatti Type 57, the Chevrolet Suburban, the Ford Köln. Its Datsun stablemates include the 280Zx and the 310.
The money
There is no federal ownership record for the Datsun Type 12 — it predates the complaint database or was never sold in the United States — so MotorJury publishes no running-cost figure for it. For a car of this age the price is set by the collector market and the condition of the individual example, not by a formula.