This is a reverb box I've had for an unknown number of years. No idea when or where I bought it. Still cleaning up leftover 66 stuff I'll never use. I suspect it's the same box for 65 as well as other years.
Along with it, I have the bezel for the reverb switch and the handle for the reverb switch, both used pieces. This is all I have, no harness and no switch. Both are reproduced I think. ($10 of the sale will be donated to Canadian Poncho)
I just checked online and Original Parts Group sells the reproduction bezel for $35 US, so I think my price of $35 Canadian plus actual shipping costs should be very fair!
Sold as is, no idea if it works, never tested and don't have any way to test it.