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Thanks very much for sharing your knowledge of these matters Mark!
With regard to Emilio Bozzi, S.p.A. I think there is a wide misapprehension regarding the items seen in that catalogue of 1950 which has been posted and much quoted online.
Bozzi was a reseller, much like Umberto Dei. There is a Dei catalogue dated 1940 which has been much quoted in online discussions also. Dei did not manufacture all of the items seen in their catalogue.
Waiting for our framebuilder members to step in and shed some real hands-on knowledge of these matters...
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