I think the Nikomat/Nikkormat split is the same game the Nikon US importers have been trying to do for years -- preventing grey market imports to keep a high profit margin in the USA. The one Nikomat I used was bought at a military Post Exchange in Southeast Asia in the 1960's. Also, due to very high excise taxes on cameras in Japan, the domestic market camera packaging is very distinct from those "sold for export" to foreigners.