Originally Posted by
Road Fan
So is this enough of a technicality? Do I win?
Dirtdrop beat you to it....but yes, you are correct. As far as I can tell it was cottered in '57, possibly cottered in '59 (the pictures fuzzy) and cotterless in '61.
'57 = PLX10 Vitus tubes
'59 = PHX10 Reynolds tubes
'61 = PX10 Reynolds tubes