Originally Posted by
Staggerwing
Found a neat old Puch mixte frame, in my daughter's favorite color, purple. Going to build it up, as a city bike, around an 8-speed Sturmey rear wheel, and a generator front.
Came with a smooth turning, chrome, 1" headset, but oddly missing the top nut and spacers.
Can append a photo, if helpful.
Some of those old Puch and Austro Daimler forks used unusual headset threading. Try a normal headset nut to see if it fits. If so, those are a dime-a-dozen. If not, you'll need to find a headset from a similar frame with the correct threading or replace the fork. I 'might' have an old AD headset lying around but first step is to find out what you really need.