Minolta MD Rokkor 50mm f/1.7
This, and the Tokina 24mm f/2.8, were part of a job lot of Minolta kit being sold off on eBay in March 2016 which I grabbed. Also included were a Minolta 28-70mm f/3.5-4.5 zoom (which is an OK lens, but doesn't have the cache of the 35-70mm - Beth took this off my hands for £25), a Minolta XD7 body which was in a bit of a state so I just binned it, and a motorwind, which worked, so I got a couple of quid for it on eBay. The whole lot cost me £48.79 gross and only 21.79 nett for two lovely lens!
I've not really had a chance to play much with either yet as we're preparing to move house but judging by this early attempt at photographing Jack it's going to be a great lens to use, especially for portrait work being 75mm equivalent with a super shallow depth of field when wide open.