Cinescopophilia has a great little article on the British Dog Shit Optics, which use old Russian lenses and make them for either DSLR’s or ARRI-PL mounts, and while built off of old Zeiss designs, they have no coating, so will flare like crazy! VERY VERY COOL!
They are quite reasonable too. You can buy them from their Etsy store for $155 for the DSLR version and $310 for the ARRI-PL mount.
I so want one