Brand directory/Courtois
The maker’s archive

Courtois serial numbers.

Antoine Courtois has made brass in Paris since 1780, trombones in particular. Compiling.

A Paris name since 1780.
Still sounding.
In this archive
Serial tables being compiled
Result format
Year or estimated range
Additional details
Factory & series, when known
Start with your instrument

When was it made?

Where can I find the number?
Free to explore. No account needed.
Understanding your result
01 / Date

A year, or a range.

The record makes room for uncertainty when a precise year is unavailable.

02 / Context

A place in history.

Factory and production era appear alongside the date when supported by a source.

03 / Evidence

A traceable answer.

See the source behind a match and what still needs to be confirmed.

Serial number coverage

Serial tables being compiled.

Open the serial lookup →
Frequently asked
Does this archive date Courtois instruments?

Not yet — no public serial tables are connected for this maker, and the archive does not guess dates.

Where is the serial number on a Courtois instrument?

The exact spot varies by era and instrument type — the serial number guide walks through the common locations.

What if my Courtois 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.