Conn New Wonder Series II Alto
Date: 1928. Image by VintageSax
In the following video Matt Stohrer gives an in depth overview of the mechanics of the 6M New Wonder (II) Alto Saxophone: Repairman's Overview: 1925 Conn New Wonder Series II Alto Saxophone.
In this video Matt Stohrer gives an in depth overview of the mechanics of the microtuner found on certain models saxophone including this New Wonder (II) Alto: Saxophone Repair Topic: Assembly of the Conn Saxophone Microtuner .
All "New Wonder" saxophones have rolled-tone-holes and "nail-file" G# keys. Notice the microtuner neck.