It is interesting that one of the most well known classic brand names should have such an elusive history. Pursuit of answers to the many questions and ambiguities we have, as well as sifting fact from myth, when it comes to the mythos of Unitron is well worth the time and effort. Unitron/Polarex unlike other brands, kept an almost identical appearance across models throughout the history of the product line. Moreover, model numbers remained basically the same, though sometimes different on either side of the pond (Europe and America). Only subtle changes in the model's appearance appeared and disappeared, (such as lettering style) and these changes now appear to be not nearly early as consistent chronologically as was once thought. This coupled with the lack of serial numbers makes the product much more difficult to track and to date, compared to brands such as Sears, Tasco, and Monolux. I wonder if this was intentional in order to reflect the timeless and enduring quality of Unitron as compared to other brands.
Solving the mystery, unraveling this elusive history, and presenting it in a accessible and enduring manner is certainly a noble and most worthwhile project. As a Unitron aficionado from way back, if my help is needed, I am most willing to do what I can. I am much looking forward to the fruition of this project.
Thank you Dave.