Conn 22B (1952)

This is a Conn 22B Bb-trumpet, made in 1952, serial number 405098.
There is no engraving on the bell wich is quite rare for Conn production models. Also, after 1930 this model was supposedly never equipped with this type of valves (top spring). It looks similar to the 22B Victor model, but given the year it was made (1952 according to the serial) it probably is not. As it happens, Conn was making changes to their 22B New York Symphony model in this period, so this fuels speculation that this particular instrument was a prototype for the new 22B Victor model.
More info on the Conn trumpet models is at https://cderksen.home.xs4all.nl/ConnTrumpet.html

Nevertheless, this trumpet found it's way to me in 1990 and became my main instrument as a teenager. It still is in excellent playing condition.