Originally Posted by
kaiserschmarrn
I have been looking at the catalogs and literature on that site, and unfortunately. they are not much help for the saddle, though they were a great help in identifying the front derailleur, which I will soon buy. The catalogs/literature, at least as far as the PRN10 goes, only says something like "leather race saddle", while for the model above, does list a specific saddle, which I think is a Brooks.
Danny
You can't go wrong with a Brooks saddle. It would have been something that someone might well have swapped out back in the day.