really nice looking devices you got.
about the Converupt.
those parts you say are resistors from old video mixer look like capacitors to me:)

the values are (if i read my color code table correctly)
red-yellow-white-brown is 0.24pF tolerance 1%
and
red-orange-white-red is 0.23pF tolerance 2%
not meant to be rude or smart ass
all the best
daniel