I totally agree with points A & B Ariel, & more or less agree with your third point. {Not that that rules it out.} Many wonderfull things made in Sheffield that many are/were unaware of Kachin Dow etc.
But could produced in Africa by Immigrant workers?
That seems quite likely to me?
Failing that, produced in Africa by locals after an suitable apprenticeship would seem the only other likely possibility?
spiral