It also goes without saying that we lost all the hits from people following links for "help identify X trumpet" - we need to keep talking shop, maybe forcing some content build, like starting posts with the sole purpose of feeding the right keywords to Google bots... e.g. is the Olds Ambassador the best trumpet ever made?
@barliman2001 : but the acquisition by the Buffet Crampon Group was in 2006, I believe at least some Gaudet trumpets are (or look) older than that. https://gaudet-france.com/a-propos/ still exists, re-launched by the Gaudet family, and they say they were Courtois' beginner brand until the 90s ("anciennement la marque étude de Antoine Courtois Paris jusque dans les années 90"). Maybe they stopped making Gaudets when they merged into the JA Musik group, 199?
Do you also have the sib extension? Any marks on the valves? (see the photos here: http://placedelours.superforum.fr/t9313-trompette-antoine-courtois-gaudet-a-amboise)
Anyhow, good news, they sell a lot cheaper than Courtois, if I come across one of those I will give it a try.
Other good news: Google as noticed/indexed us, on a search for "courtois gaudet amboise trumpet" we're on the second page.
Btw, Jason Harrelson seems to have different measures standards:
@SSmith1226 Txs! My hometown! That's an artillery tower built in the beginning of the XVI century to defend the entry of the city, crossing fire with another one on the other side of the river. It used to be further away from the shore - it was built to ressemble a ship.
@dupac : with the CRS percussion section 
