WANTED:Columbia Cylinder Graphophone Governor Friction Discs

[FellowCollector]

I'm asking forum members to look in their parts bins for Columbia cylinder Graphophone governor friction discs (or the whole governor assembly) that you would consider selling.

I'm interested only in the common aluminum (or brass) Columbia cylinder Graphophone governor friction discs made for a 4-weight governor.

Pictures below indicate what I'm looking for. Disc diameter makes no difference at all as long as it is for a Columbia cylinder Graphophone and is a 4 weight type.

If you have an original Columbia cylinder Graphophone governor friction disc having 4 threaded governor spring holes (one at 12 o'clock, 3 o'clock, 6 o'clock and 9 o'clock) or the whole 4 weight governor assembly please contact me by PM with pictures and price.

Thanks.