Hi all, I have idea about a headset that has all of those features. To
get a sealed headset you would need to go to a mountain bike or a modern
roadbike HS. Re tapered bearings you can use a older Galli criterium or
Super Criterium, the only problem is really that the cost and the fact
they are not well sealed.
I have a Gipiemme cronosprint, while not sealed it is real nice
70's/80's style in alloy and has balls at the top and tapered at the
bottom, you will pay cheaper than a NOS NR or SR Campagnolo item, I paid
US$44 for mine and its NOS.......regards wayne davidson Invers
NZ......wet n windy at the moment.......