This thermostat (Lennox 10F81) is used but is in like new condition cosmetically and functions as intended. The screen has no scratches, marks or scuffs. The plastic on the thermostat bezel and bracket are bright white. The bracket has screw marks and red paint from previous install. (See pictures for detail)
I have tested the thermostat and reset it back to factory default when I was done. (See last picture for more about "factory default"). I ran it for 24 hours through several heating cycles on my system. I have included pictures of the Thermostat during the test.