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National bought out the Remington cash register co. & continued to build it as the 4000 & 5000 series. It was a good machine & National took the basic design & sort of down sized & re-arranged the part plus added their own ideas, which became the 100 class series.
Dick

NCR Dundee Scotland was setup to manufacture the 100 class and NCR Australia in Sydney had an assembly line in the early 60s to cater for the large demand for these machines.just prior to changing our currency from English Sterling to decimal ..
Milton