The remaining numbers indicated the production number within the month.įrom 1987 on, the two-digit prefix number plus 50 will give you the year of manufacture. Screw m3圆mm PHSS EACH 0.74 ETC-I210 Serial Number Label Universal Fader. The fourth character indicated the instrument: BSS-32-0390 Conn Plug 6 Pin Euro Green Male BLUBIB EACH 29.70 BSS-32-0423. The third character indicated the year within the decade (defined by the first letter). For the rest of the 1970's the serial number began with 2 letters, the first letter always being 'G', followed by 5 numbers, such as GD99999. From 1963 through 1972 the serial numbers were a letter followed by 5 numbers, such as C99999.

The second character indicated the month of the year Vintage Conn 22B's from the 1920's through 1962 had 6-number serial numbers, such as 999999.

The first character of the serial number indicated the decade The fourth character (number) indicates the specific type of instrument: '1' Cornet, '2' Trumpet, '3' Alto Horn, '4' French Horn, '5' Mellophone, '6' Valve Trombone, '7' Slide Trombone, '8' Baritone Horn & Euphonium, '9' Tuba, and '10' Sousaphone. In March of 1974 an alpha-numeric system was established: The years 1967 to March 1974 (when Conn moved their brass manufacturing to Abilene, Texas), is a period where at least some of the instruments were inferior in quality 1980-1986 numbers are inexact, and may relate only to student level trumpets/cornets

Conn trumpet serial number 365359