Well, I guess you know more about these things than I do. Romani was a good frame-builder who worked for other manufacturers as well. There was Taverna (Vetta). Basso, to my knowledge, made the frames that were sold as "Cesare M." by Brügelmann in Germany. De Rosa had a subcontractor, I think. Chirico worked for Cinelli. Battaglin? Gozzi? And, since we are talking about aluminium, ALAN frames were sold under different labels, too, e. g., in Switzerland.

"The German trace"...?