I had a pristine 55/1.2 OM for about two months before I sold it after getting a 50/1.2 in slightly worn condition. The 55/1.2 was such a beautiful, big piece of glass and took very nice, soft, creamy pictures - with a very warm tone compared to the 50/1.2. I do regret selling it somewhat, but I simply wasn't using it enough. My OM-1 is my day-to-day camera and a pristine 55/1.2 simply isn't a day-to-day lens.
I have that 50/1.2 for sale if anyone wants it. I suppose I should post it in the Classifieds but I haven't got round to it. If you're interested, pm me. I would rate the cosmetics to be about 8.5/10 and the optics to be a 9/10.
Beautiful lenses though.