Humphrey / Guy Humphrey

Joel writes that he is the original owner of a one of these:
Guy Hunphrey **, LeSuperiere,Paris,
7 ring, articulated C#/G#, in original case, Ser. 775, still
being played currently, in preference to some other
professional models I own. I am the original owner- purchased
new in the late 1930s.

1950 ad:

1937 ad: