Originally all Valtro's were supposed to go through John Jardine's Valtro U.S.A company. He had designed the gun in conjunction with the now defunct Valtro Italy.
The guns were made to his specs and as you know the finest materials. After a slow start guns started coming out of Italy to John in California. He would inspect and tune them,making sure that they were up to snuff. These guns are the ones going for 10-15000.00 in the states. Valtro Italy then sold directly to Canada and Europe bypassing Jardine .It was said that the guns that John rejected went this route as to not write them off although as I previously mentioned mine are all first class. The other view was that John was slow in getting guns out and the factory needed a bigger distribution chain. He is a legendary gunsmith real gentleman, and meticulous in what he will let out of his shop so maybe he went over the guns with more attention to detail than the factory wanted. Word has it they didn't have the same threshold as to what was considered " Good to go". Today he still does custom work with a long wait list and last I heard has Valtro frames and components to complete more guns although no one knows how many. There is more information on the forums down south. As far as the "Canadian " ones go, they are exactly the same but haven't gone through his hands. All Valtro's are rare and will go up in price regardless of their source.
BTW, even the Canadian guns came with outer boxes with the original San Rafael CA address.