The results of the Thinkpad roulette are in: They are X200 tablets. Unfortunately, both are LED backlit. Fortunately, unlike the X220, maximum brightness leaves the LEDs switched on 100% of the time, leading to no flicker.
The displays are truly terrible, though. Viewing angles are good, but they have that strange multicolor "sparkle" that seems to accompany low-resolution LCDs covered with a digitizer.
Also, how the previous owner managed to bend a Thinkpad is simply beyond me.