Austin 'Seven Ruby' Saloon (ARR) MK 2
from The Autocar, November 6 1936.
Outwardly the Ruby MK2 is recognised by the curve at the base of the side pillars to the windscreen and the wind down opening rear windows. The engine has a three-bearing
crankshaft. See
ARQ & ARR Ruby & Variants
NB: The Austin Seven Companion states at page 51 that 3 bearing engines were introduced
in June 1936 at engine No 249001 and were installed in late Mk 1 (ARQ) Rubies.

See also:
Austin 'Seven Ruby' MK2 From
Practical Motorist, March 27 1937.
Lubrication Chart for ARR Ruby & Variants
Wiring Diagram for ARR Ruby & Variants
Specifications for ARR Ruby & Variants