ok now im reely I have only seen 2 canadian thorn tubes befor (A F15 and F40) and both had normal thorn etches but were made buy GE wich is rather odd.but this is the ferst time i have seen one made (serposedly) by silvaner (and has an exsport etch) but at the same time makes sence that if thorn had to out sorce its lamps from some one in the US/canada it wood be silvaner as they worked together on lamp devlepment etc