Commando clocks

I can only narrow it down slightlyto between 1969 and 1973 - had a '69 Fastback with solid green circle clocksand a '73 Mk 1A 850with the wavy line circle clocks. Probably too simplistic to surmise it was the transfer from 750 to 850 models in '73 although a possibility. Production of both these models overlapped for a few months in this year anyway.

My Commando (which I bought 31 years ago) was made November 1971 Serial No. 200219 and it has the wavy line circle clocks.

Serial numbers 200K onwards were listed as the 1972 model even though theystarted tobe manufactured in late1971.

I think this was when the Green globe changed but will be happy to be corrected

To confirm Alan's point, my Commando - Engine No. 200191 has the wavy clocks - but hey?