As way of an update on this project, the Contempora Corner site update went live yesterday with new pages about the original (1936-1946) F.A. Reynolds trumpets and cornets:
Still no actual model designations, but I believe I have the different variant timeframes sorted out. I'm still working on some of the special finish options, e.g. silverplate, goldplate, etc., that have been reported and will welcome any model information, including bell sizes, bore sizes, photos, etc. that anyone wants to share.