British Motor Corporation does not build many cars like the Morris Isis: a 4-door saloon / 4-door tourer / coupé with 2.5 , built from 1929 to 1958 the vintage years, when coachbuilders still shaped most of what was sold.
Where it came from
The Morris Isis name was first briefly used by Morris Motors Limited on a 6-cylinder car made from 1929 until 1931. It was resurrected on a new 6-cylinder midsize car from the British Motor Corporation in the 1950s to replace the Morris Six MS. The name was discontinued in 1958.
Under the skin
Under the skin sits 2.5 . The gearbox is a 3- or 4-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 120 in. These are manufacturer figures carried by Wikipedia and Wikidata, not road-test measurements.
In context
Where it sits in British Motor Corporation's history is not in doubt: the Morris Six MS came before it; the Line discontinued in favour of / Wolseley 6/99 followed it; it was built at United Kingdom. On a showroom list of its day it stood against the Peugeot 201, the Rolls-Royce 20/25, the Bugatti Type 35 B. Nearby in the British Motor Corporation catalogue sit the Austin 10 and the Austin 12.
The money
MotorJury scores cars on the United States complaint and recall record, and the Morris Isis has none: too old, too rare, or never sold there. Its value today is a collector's question, decided by provenance and condition rather than by a class average.