28H. If you ever built your own wheels, you’d know the ..joys? of ..it
I used to put my own wheels together at one point. There was even a reference book for lacing patterns and to get the correct length of spokes. That was rather troublesome. but in the end, it was all kind of fun.
These were Campagnolo Record (2002?) 28-hole small flange hubs, which I did build. Now they just got sold on Mercari.