Pin from the Soviet Union. If you know who the person is on the pin and what the text means, you will get ot for free!

We have a winner! Big thanks to Paul from The Netherlands who could provide this information about the pin:
" This Bulgarian pin is about Georgi Dimitrov. The MKM means:”Magnitogorsk Iron And Steelworks” which had a branch called ‘Georgi Dimitrov’, in the village of Eliseyna in North-West Bulgaria, and that name is therefore (Елисейна) under the head of Dimitrov. "