Timeline of the MINI (ADO15) Elf/Hornet varient

October 1961 - Riley Elf and Wolseley Hornet introduced with 850cc Engine and no body seams.

April 1962 - Body seams appear and over riders appear

1962 - Baulk-ring syncro introduced. Leather replaces Leather cloth. Rear seats improved. Diaphrams replace webbing straps.

November 1962 - MkI Elf and Hornet discontinued.
Total MKI produced, Elf = 3522, Hornet = 3166

November 1962 - Mk II Elf and Hornet introduced with a 998cc engine and twin leading brake shoes on front. Counter balanced boot lid.

May 1963 - Plastic window catches replace chrome.

September 1963 - Improved Dampers fitted.

September 1964 - Hydrolastic suspension fitted. Diaphram clutch. Combined Starter /ignition fitted. crushable sun visors and plastic framed rear view mirror.

May 1965 - Automatic transmission introduced

October 1966 - Elf and Hornet MKII discontinued.
Total MKII produced, Elf = 17816, Hornet = 16785

October 1966 - Mk III Elf and Hornet introduced with roll up windows, Cooper type remote gear shift and optional heated rear window.

October 1967 - Re-designed seats. New stalk control. Plastic cooling fan. Automatic optional.

August 1968 - All syncro-gearbox introduced.

August 1969 - Riley Elf and Wolseley Hornet discontinued.

September 1969 - Austin, Morris, Riley and Wolseley names dropped. Marque name becomes Mini.

August 1969 - MKIII discontinued. Total MKIII produced, Elf = 9574, Hornet = 8504

Grand total: Elf = 30,912 and Hornet = 28,455

Many thanks to Tony and a few mini sites for this information.