S = The 3-Litre Bentley as first produced - 9' 9 1/2" wheelbase, low compression engine, single Smith carburettor.
TT = Replicas of cars raced in the 1922 Tourist Trophy Race -- actual race cars in italics. Similar to "S" above, but with raised compression engine.
IND = Indianapolis car.
L or ST = As "S" above on 10' 10" wheelbase, known as Long Chassis, but after introduction of Speed Model was referred to as the Standard Model
SP = Speed Model = 9' 9 1/2" wheelbase, high compression engine, twin S.U. carburettors (NOTE: Chassis No. LT 1578 was on a 10' 10" chassis.)
100 = 100 m.p.h. Model -- 9' wheelbase (NOTE: Chassis No. AX 1652 was on a 9' 9 1/2" wheelbase.)
LT = Light Tourerer -- 9' 9 1/2" wheelbase, low compression engine, single Smith carburettor.
N = Model not ascertainable from Works records.
* =
BLANK =
SPW =
