Recordo expression device I removed from a Clarenden (Pratt-Read) player.
The customer didn't want it restored.  15" x 7" x 3", 4-valve unit block
on top.  4 brass knobs along the side to adjust each dynamic level.
1" hose feed at the bottom.  Nice little brass plate says:

  ELECTORA  REPRODUCER
  Motor Player Corp.
  Chicago, Ill
  Model "A"
  Serial # 1981

Price $50.00 , includes postage