My piano was made in 1918, it's now an orchestrion.  I checked the
pouches in 1982 when I purchased the piano; they were in excellent
condition, and it is a double-valve system as well.  The piano appeared
to have been played a great deal by hand, as the sustain pedal (of
solid brass) is very worn and the black keys around the centre were
worn and parts on some surfaces worn down to the bare wood.

Someone suggested I use neatsfoot oil on the pouches, which I applied
sparingly.  After 28 years the player action still works fine and all
the remainder of overhauled parts.

Stephen Bentley - sending from sunny and hot Buenos Aires!
SB-"O" rolls
Vancouver, British Columbia