I think these were used from the mid 60's to about 1973 or so. I'm not at all sure AVA actually made these stems, as I've seen nearly identical stems marked as a number of different French brands. Never broken one either, or personally known anyone who did. But I do have a pair of the AVA bars they were used with that has a nasty hairline crack.
Regards,
Jerry Moos Big Spring, TX
Bianca Pratorius <biankita@comcast.net> wrote: What years were the faux lugged, hollow extension AVA stems offered as standard equipment on the PX-10? I know at a certain point they switched to another stem for safety reasons.
Garth Libre in Miami Fl USA