Originally Posted by Condorino

I would agree that the general format of the frame would suggest a 'Sportivo' or sport bike and probably a top model given the internal cable routing such as the 'Selvino' from Bianchi although I am not suggesting this is a Bianchi frame. To help you on your way . . . I took a look at a few old catalogs that illustrated the type of seat lug with the binder bolt above the top tube and ahead of the seat post as follows:

Ganna 1939
Gloria 1941
Maino 1936
Bianchi 1941, 1949, 1950, 1953

Again, not suggesting that this frame is from any of these makers as I am outside of my expertise on this one to be sure. Juvela would know if the Bianchi seat lug was proprietary to them . . . the other marques listed may have used the Agrati product(s).

regards,
Mark