Hold everything everyone, before we all end up going round in circles. It sounds like Steven's car may be the rarer, basic model of three-wheeled Mini Comtesse, (Model 730). Mine was the more common "De Luxe" Model 730E. Does yours actually have an electric starter Steven or does it start on a rip-cord? The lack of a speedo & non-electric windscreen wiper screams basic 730 to me, with the possibility that the rip-cord starting engine has been replaced with an electric start version.
Also, the later, more "upright" three & four wheeled versions (Model 770) were also called Mini Comtesse's, from about 1975-1979 later to become "Super Comtesse" from around 1979, but look totally different.
Then don't forget the badge-engineered Willam Cyclo 49, which was the original Model 730 Mini Comtesse built under Lambretta-Willam license into the 1980s in "narrow" single-seat form, and "wide" two seat form (the latter not to be confused with the aforementioned two-seat Model 770 Mini-Comtesse). Plus don't forget the CEDRE electric versions of model 730....
I think I'm going to have to do a spotters guide to the cars of Acoma, 1972-1984....