I figured I'd list it here first...
FOR SALE:
1 used TKM MX300 Nav/Comm
Black face
12 volts
Auto-dimmer works
Serviced in summer 2006 by Rudy Instruments w/yellow tag
All indicators/functions work & light up properly
Installed and being used in plane now.
$800.00 USD radio & tray
$950.00 USD w/VOR indicator
I really like this radio and it works well on all functions, however at present, it doesn't fit the overall grand-master plan in the avionics stack.

Cash, check, postal money order or bank cashiers check.
FREE SHIPPING to the lower 48, other geographic locations at standard rate.
Looks similar to
this used one [
aircraftpartsandsalvage.com] but, I know mine works and has never been swimming!
Here's [
sarasotaavionics.com] a new one for comparison shopping.