nel quartiere meneghino Baggio, a Milano, fondata da Carlo Monti ufficalmente nel 1935 - brasata (brazed) by Giovanni »Vanni« Losa filius faber automatarius born in Erba, Como and later moved to Vittuone, Milano.
Who brazed about 1000-1200 frames a year from the 60s to 2008, alsmost half century - halbes Jahrhundert Ohh mein Gott!

Son of a clockwork builder, worked and learned under PSM "Santino", Sante Pogliaghi Milano. No complete frame jig used...
before accepting an apprentice, Losa send them to PSM for a few weeks. Worked for Bianchi under the one and only pinza d'oro Giuseppe "Pinella" de Grandi
build {officially } for nearly two decades the Cinelli SC at the end of his career, from 1990-2008. Anyhow Tomi Serafino recalls seeing Losa at Cinelli s factory already in the 80s ‍ boh
1200 frames a year as max. productivty

main frame supplier to alto milanese and basso varesotto.
In Italy LOSA for:
brazed for Cicli Anselmo (since 1979 Loano, Savona Liguria), Graziano Battistini ('36-94') (ex corridore professionale), Bonfanti, Felice Branca (magniflex mechanic, had in the beginning frames by the Voltas, then Giuseppe "Pino" Pelà and last but not least LOSA, maybe there Pelà and Losa met...) Bruno Brazzo (Certosa di Pavia, PV - Lombardia), Cassani, Lucio Colzani (Merone, Como), Luigino Chiodini (former pro, comune Magenta di Milano, Lombardia), Ottavio Dazzan, Del Sante (Parma), Cicli Fartà (Bergamo), Fusar Poli, Gandolfi, Granazini, GiuPek Giuseppe Pecchenini (comune Parabiago di Milano), Paolo & Italo Guerciotti (Milano since 1954), Guarini, Lino, Luvi, Pep Magni (Baggio, district of Milano), Magni Bergamo di Chiorda..., Martinelli, Milesi, Mino, Cicli Monti (Dal 1935 a Baggio, district of Milano), Oliviero Morotti (since 1975a Nembro, Bergamo, former pro at Dreher for example), Cicli Mosconi (Padova), Natalini (Viterbo, Lazio), Pavarin (since 1974 Varese), Record * S, Santa Maria (Milano since 1972), Poretti, Priori (@Cremona, Lombardia), Ravasi, Rimoldi, Stefanoni, Taldo, Terruzzi, Tunesi, Turconi, Turri, Uboldi Mario @ Baranzate MI, Cicli Zanazzi, Zapier, Zini

and a lot of swiss bicycle stores & brands, like ICS, Krapf, Coassin, Gody Schmutz, Velo-Sport Sieger by Jakob Sieger (züricher Kanton Winterthur), Weros Zürich (Werner Ott, @ Zürich-Seebach), Piero Zurino, Schneider, Schwab (züricher Kanton Winterthur)