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Go to and check pics of various Conns so you know your forms, or you may end up paying 6M prices for a Mexiconn. You'll see a NWII or 6M on eBay occasionally listed as a late 60s horn because someone consulted the serial number chart and misinterpreted it.Īs Bruce says, it's best to have a pic of the horn.
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"M"-prefaced horns from the 20s-30s have 6 digits after the M. I'm not certain of this, but I believe that an "M"-prefaced serial number from this vintage will only have 5 digits. The Ms you have to be careful of are the ones in the 60s.Conn ran out of serial numbers and started putting letters in front of them in the late 50s or early 60s.starting with "C". Other cup mouthpiece serial numbers are not available at this time. 1980 - 1986 serial numbers are for student trumpet and cornets only. BTW, officially, even NWIIs were listed as "6M" in Conn's catalogs, even though the 6M stamp didn't appear until after the Conn transitional period. Note: From 1987 to present, add 50 to the serial number prefix to calculate the year of manufacture. As Bruce stated, the "M" stands for saxophone. I was told limited info about serial numbers and that you just 'look them up and find your instrument' and assumed nothing more. Note: From 1974 to Present - The prefix number plus 50 will give you the date manufactured. So E plus 5 numbers is either 1964 or 1965, depending on what the 5 numbers are. Knowing your trombones serial number can help you identify the year your instrument was made. Other cup mouthpiece serial numbers are not available at this time. 1) I have 88 brass horn serial numbers that seem to fit a Cavalier serial number system. Not all NWIIs have an M in front of the serial number. 1980 - 1986 serial numbers are for student trumpet and cornets only. There were 2 sets of Conn models that had M prefacing the serial number, and this often a source of confusion.Ĭonn started putting "M" before the serial numbers during the New Wonder II (Chu Berry) line in the 20s.
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