Conn 22B New York Symphony (1937)

This is what I believe to be a Conn 22B New York Symphony (Late Model) trumpet in Bb, made in 1937.
Usually, Conn trumpets from this period should have a model number engraved in the leadpipe, but this one does not. However, it looks like a 22B New York Symphony (Late Model) so unless someone can convince me otherwise, that's what I will call it.

It is missing the water key on the main tuning slide, but apart from that it is in very good playing condition.