Kopp's cycles in Princeton NJ used to have some Altenberger HF hubs in the display case. I remember a rose anodized pair, for one. These hubs had one distinctive feature: the holes in the flanges were "siamesed," two overlapping holes that looked like a figure 8 on its side. I had assumed early 1960s, but with no reason.
I would love to find one of the Altenberger horizontal rear derailleurs, or even the Suntour from a later time. If the price is reasonable for eye candy.
harvey sachs
mcLean va