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. In 1966, the Normandy 10 carried a list price of 189.50. A c.1962 brochure lists the Normandy 7 at a price of 172.50 and the Model 10 at 182.50. The fourth character indicated the instrument: Early Model 7 and Model 10 Normandys were not stamped with a model number, but by 1966 the Model 10 was marked with a 10 on the upper joint above the wide Normandy shield. The third character indicated the year within the decade (defined by the first letter). The second character indicated the month of the year The first character of the serial number indicated the decade 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
