Want to know the crazy part? This is the version after TWO rounds of value-engineering. The Model B and Model F are both a good bit more robust than these Model M’s, and these last forever. The older boards are more rare due to less compatibility and a smaller computer market in general when they were released.
Should I avoid mentioning the modern Model F repros? LOL.
TBF, while I do have a ten year old Unicomp, and it’s perfectly lovely despite pre-dating their improved molds, I haven’t tried a modern Model F, or indeed used any Model F in at least twenty years.