..... Any ideas what a fair price might be? Thanks.

.... Several years ago, I bought my TCS-12 system with the tuner,
control box, and manual all in excellent/working condition and with
matching serial numbers. There were, however, no cables nor power
supply. I paid $525 for the system....

FWIW (not much, but I can't resist bragging), in about 1969 I purchased
NINETEEN brand-new TCS-13 sets from DoD surplus sales in California for
$10.51 EACH. Each part was wrapped in a multi-layer desicant-inside "sack"
and they were all in a large (roughly 2x2x4 feet? It's been a long time,
but my kids built really-nice "forts" out of them!) wooden box with ALL
accessories except power supply: two sets of cables, control box, two
keys, two mics, tuner, a bunch of spare parts such as cable sockets,
mounting plates, and I don't remember what else. I sold 17 of them and
still have two (although I haven't turned them on for so long that I'm
afraid they my not work any longer. I later bought noise limiter kits
for each and one dynamotor set just so I could say I had operated using
a dynamotor!

Ham radio is FUN and it's been good to me.

But boy! TCS systems ARE boat-anchors!

--
--Myron A. Calhoun.
Five boxes preserve our freedoms: soap, ballot, witness, jury, and cartridge
PhD EE (retired). "Barbershop" tenor. CDL(PTXS). W0PBV. (785) 539-4448
NRA Life Member and Certified Instructor (Home Firearm Safety, Rifle, Pistol)