Gorgeous horn! The slide section is .485"/.500" bore and features a 7"bell. Yellow brass horn that has been silver plated. Pressure fit lock. They are immediately recognizable by the bell garland or "Tone Band" with the make and model engraved or stamped. The earlier versions were even nicer with lightweight red brass bells, all other parts nickel silver, the inside slide tubes were fluted to reduce friction and the signature hand engraved on he tone band. The earliest tone bands were 1" wide compared with the later examples at 5/8".
This horn is unique in that there is not slide lock or receiver lock! Great vintage horn for all your needs