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Number 2:Some more research work so far done,...... This brief historical insight is the key puzzle part to hunting foreign vintage insulators. It all goes like this, basic prime materials were bought in the country, plus the working force, but all sophisticated appliances were imported, because back then the local industry aimed to consumption goods. That's the route to the Isorex French made insulator found in Argentina. More specifically at Moll train Station in the route from Buenos Aires to Patricios. These rare samples made by the French company in bottle green feature the ID codes 1099 ISOREX, CD 435. According to the information published at several sources, Isorex is a subsidiary trademark of the 17th century original Sediver French company created in 1906 called Nord-Verre ISOREX being their trade mark . Crossing the data, reinforces our hypothesis of the Isorex vintage insulators found in Argentina. For throughout the decades of 1910,20, 30, 40 & 50, we can trace directly the French insulator supply for this railroad company. Latter on, the Peronist government would purchase these train companies to be managed by State departments.