ELBBLECH - How about a stunning King Silvertone from 1929 ? I've posted Silvertones before but never this version. The Silvertone is the predecessor to the hugely popular Silver Sonic. I think
King 28 trombone Mouth Piece Small Shank Trombone Prima | eBay
King 2103F 3B Legend Slide Lacquered Trombone with F Attachment | Ludimusic
King 2b Liberty H.N.White Tenorposaune 1949 - Handselektierte Premium- Posaunen vom Profi-Musiker getestet
Trombones & Accessories [on sale or to buy] | 1970 King 3B Silver Sonic Tenor Trombone Preowned | Facebook
King 2103 Legend 3B Trombone – Thomann UK
King Balancer Emblem Trombone – Thomann United States