Brand directory/Conn/Serial number
Start with your instrument

When was it made?

Enter the serial number marked on your Conn instrument — usually on the valve casing, bell or receiver.

Elkhart beginnings.
A century of American brass.
In this archive
Serial numbers & production eras · 1876–2005
Result format
Year or estimated range
Additional details
Factory & series, when known
Where can I find the number?
Free to explore. No account needed.
Where to find the number
trumpet, cornet

Valve block, stamped vertically on the BACK of the 2nd valve casing (C6).

french-horn

(1) small font on trigger rotor, vertical; (2) small font on finger lever bracket facing hand guard; (3) large font on 1st/3rd rotor vertical; large font on 2nd rotor horizontal (C6).

Frequently asked
What serial numbers does this archive cover for Conn?

The archive currently covers 8 series and 164 dating ranges from 1876 to 2005, compiled from published maker records and reference charts. Coverage grows as new tables are verified.

Where is the serial number on a Conn instrument?

Valve block, stamped vertically on the BACK of the 2nd valve casing (C6). The exact spot varies by era and instrument type — the serial number guide walks through the common locations.

What if my Conn serial number is not found?

Recheck the characters exactly as marked, including any letters and leading zeros. Letter-prefixed numbers often belong to student or non-domestic lines that cannot be dated from the number. Some production periods may simply not be covered yet.