The mini had a 5.25" midwoofer, the larger monitor had the 6.5 you see in your pics.
Yes, just 'monitor'. Circa 1993 give or take a year, I don't have my Orion in front of me, so I can't look it up. About $200 a pair, standard fare on specs, 100 watts, 91db efficient, 8ohm nominal.....