I got them from another longtime Zendrummer/friend- Tom Pettit.
As I understand the story from Tom, I'm only the third owner since 1937!
This is reported to be the first year Slingerland made tunable toms due to the popularity and importance of the first drum mega-superstar & "household name endorser"- Gene Krupa.
The sizes are- 26X14 kick, 9X13, 14X14, 16X16 toms, with a 7X14 wooden snare.
They live in my studio now, and yes, they sound GREAT.