This has been an interesting and enlightening thread. For what it's worth, my ca. 1981 tre tubi Bianchi (see signature) has the following attributes: 1) under bottom bracket shift cable routing; 2) single set of water bottle bosses (downtube only); 3) no pump pegs; 4) recessed brake mounting nuts; and 5) two-tone gold-over-red drop shadow "stick" type BIANCHI decals on the downtube and seat tube -- no chevrons.
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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