Julie Porter posted in 030324 MMDigest that she had some plastic valves
that she was going to throw away because she could not identify them.

I believe they may be replacements for the small "Pianola" player
piano made in the late 1950s or early '60s.  They are probably worth
saving.

Rodney Diehl

 [ Julie wrote, "There are about a dozen or so plastic valves of
 [ experimental design.  These are clear plastic and seem to have
 [ neoprene gaskets.  They are glued together and can not really
 [ be repaired."  -- Robbie