This is a fairly rare vintage trumpet and flugelhorn set. The trumpet is a Conn 100B Doc Severinsen model in silver plate. This predates Doc's Destino, Straub, Bel Canto, and Getzen models.
The flugelhorn is made in Switzerland by Willson, but it's also engraved Conn. This predates the Vintage 1 and other contemporary Conn flugels.
In good condition with some light tarnish, in double case. Trumpet third slide stop hardware is not complete.