Mayby this helps...
From the "Vickers Aircraft since 1908" CF Andrews-EB Morgan /Putnam 1988
Chapter : Vickers Types 1920-1963: Type 246 : G4/31 monoplane (Pegasus IIIM3)
Type 253 : G4/31 biplane (Pegasus IIM3)
page 497. no drawing numbers. both planes constructed as prototype .
but there is more..
from page 295 :
Vickers wrote up project designs data arround three separate paper aircraft. (November 1931 to spec.G.4/31)
The first was a low wing monoplane with open cockpits and trousered fixed undercarriage
and a Pegasus IM3 engine mounted in a pointed streamlined nose.
The second wa a similar monoplane but with Rolls Royce Kestrel IIIMS water-cooled engine
mounted in a pointed nose with underslung radiator.
And the third was for a wide-span Pegasus engined biplane ,reminiscent of the earlier Vespa, and again with
a trousered undercarriage.
