In my experience, contacting the bigger companies and asking them about their own history is rarely a success! Sometimes it's better to speak to collectors and enthusiasts.
Seat-lug & fork crown are certainly Cinelli-like so it may be worth contacting the guy who runs the Cinelli-only blog. Another good place to try would be the Classic Rendezvous forum, I think they'd be quite interested in it and much more likely to provide a quick and helpful response
In my experience, contacting the bigger companies and asking them about their own history is rarely a success! Sometimes it's better to speak to collectors and enthusiasts.
Seat-lug & fork crown are certainly Cinelli-like so it may be worth contacting the guy who runs the Cinelli-only blog. Another good place to try would be the Classic Rendezvous forum, I think they'd be quite interested in it and much more likely to provide a quick and helpful response