I guess if I want an answer I should put the question in the right place In Canada the horns i have found are Rubes and on the net most are in the States are Non Pariel Is this just a difference in suppliers between Canada and the US the horns look to be the same . Cheers Colin
As far as the later (the so-called 3/4 twist) horns go, about 75% seem to be Rubes and about 20% Nonpariel. Standard, which appeared in 1914, makes up the last 5%. The early ones seem to be about 65% Rubes and 35% Nonpariel.