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The Combat specification engine had apparently been available as a "special order" item since 1970-however it is doubtful that many (if any) were fitted to standard road model Commandos.


The first standard production Commando built to Combat specification was supposed to have been 200976 (however lower 200xxx serial number Commandos with Combat spec. engines appear to exist).


According to factory service release N3/32 (Sept. 1972), all Commandos built from serial number 211110 reverted to "standard" specification, but still retained the 32mm carbs with either a "High" (RH6) or "Low" (RH5) compression cylinder head fitted in place of the Combat (RH3) head. It must also be taken into account that not all Commandos built during the 200976-211110 period had Combat engines.


Official 1973 (750 MkV) production supposedly commenced at serial 220000 from March 1973, however 22xxxx serial number Commandos with late '72 build date stamps are known to exist. Certain sources list 212278 as the start of 1973 production.


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