I'm selling a KS34461A with GPIB option installed, as I have two, and a 34401A coming. According to the serial number, it is from 2018, so 5 1/2 years old.
Last calibration is from 2021, although I performed zero calibration with a 4-wire short, after a few hours of stabilizing with the short connected.
It works perfectly AFAIK, and it has done so since August last year when I got it, however, it is a bit roughed up I'm afraid, don't know if it was dropped or hit with something at some point in it's life, but it certainly looks like it.
It has a slight crack in the front panel plastic, which I didn't see until today, taking the photos to sell it
Also, the external metal chassis is slightly depressed in one of the sides, close to the rear. I haven't been able to find any hint of damage on the inside though.
It was used in a rack and came without bumpers/handle. I bought a set of bumpers which will be attached to help protect it during shipping.
Asking price is €600 plus shipping at cost, but I am open to offers. Also, If you want me to do any kind of test
please ask. Sadly, I don't have metrology grade standards, or anything of the like.
I can post comparisons with the rest of my DMMs, though.