Originally Posted by
juvela
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Dates from early 1960's. Frame constructed with Agrati lugset model "AM." Head is bulge-formed. 1964 was approximately the final year for the bicycle's Ambrosio I-beam stem. ...
Do hubs have a "Simplex" mark on their barrels? Suspect they may be five-piece steel made for Juy by FB. Pedals look like Sheffield model 663. Chainset Magistroni, regardless of how marked.
Regarding branding - cycle could be a contract build done for an importer or chain store. May not be a "real" brand in the sense of their being a cycle manufacturer with that name.
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Have had a number of different Italian bikes from this time come through my workshop which were identical "in the metal" to yours. All wore different brand names.
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The lugwork differs slightly, but the frame looks a lot like that of my 1962 Bianchi Corsa. Beyond that, juvela has it pretty well dialed in -- one of the mass-marked Italian bikes that made its way to the US in the early 1960s, some appearing in bike shops, others in department stores. The seat post diameter will help us narrow down the type of tubing, although I can almost guarantee it is plain gauge carbon steel, rather than, say, butted CrMo / Columbus.
I have a special fondness for Italian frames of that vintage, because their geometries make them superb all-rounders.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069