First published 20/03/23 and updated 8/05/23. Mario Peloso di Alessandria (b.1910-early 80’s?) was a master frame builder who learnt his trade at bicycle maker, MAINO. In the late 1940s he started to build bespoke frames under his own name supplied from a small workshop on Via Milano, Alessandria, Italy. By the late 1950s he was making frames for professional riders including bikes for the Carpano-Coppi Team ref. though these weren’t badged with his name. He also built frames for a number of bike brands, including Cinelli (Super Corsa model 1950s-60s), Godio (1950s) ref. and A. Suzzi (1970s)-ref. Based on the information and evidence below, I believe that Mario Peloso may have made some of the early 50s/60s Sedazzari frames; these include the Sedazzari velodrome model featured on this website (information from seller).
The 1950s Corsa model also displays many Peloso features: the long crimped chainstay and the circle lugs design (see comparison with known Peloso frame – 3 pics below)
Peloso’s workshop on Via Milano, Alessandria was c.85km , a 1 hour drive from the Sedazzari bike shop in Genoa, so a relationship is credible.
Frame key features. Peloso branded bikes and the example he built for A. Suzzi typically have identifying initials of owners, and sometimes brand and model names etched into the seat lug. These are not features to be seen in the later Sedazzari Specialissima models.
Internally, many Peloso frames feature 5 “venting” drill holes in a cruciform (cross)-shape when looking inside the seat and head tube, a process feature also adopted by frame-builder Mario Confente some 20-30 years later. These are also to be found on some Sedazzari Specialissima frames suggesting the practice became an established one.
Frame Builder Mario di Staglieno
The only information I have on Mario di Staglieno, the frame builder for the Sedazzari Specialissima models is that he was well known locally and had a workshop on Via M. (Via Marcello?) in Staglieno, Genoa. There is online speculation (one source) that prior to Sedazzari, he worked for Bianchi. As well as frame building, he also hand-built spoked wheels (not clear if the writer referred to bicycle wheels or motorcycle wheels) and resprayed motorcycles from his workshop in Staglieno (two sources).
Sedazzari vintage bikes 