Re: Recommendation of retro racing seat
Everyone's bum is different so recommending saddles is a bit pointless unless you just care about looks. Personally comfort is more important than period correct, if you can find one that is both then that's great.
Some say the old Cinelli Unicantor's are comfy but then others say they are horrible... but that goes for pretty much any saddle. Cinelli Volare original or re-issue is another. Selle Italia Flite original, including the gel and carbon or re-issue. Iscaselle Tornado. Then as above regal, turbo, rolls...
If you want new but retro looking the Milano Flites and Turbos look good, there are 3 styles for each. Cheaper if you look on the German bike sites (not sure where you are).