The overall condition of the camera is "well used". All the pieces are there and everything seems to work fine. The shutter is slighly sticky and there is lots of gunk everywhere. The last owner never washed his hands.
All the screws removed. The one on the left top corner is shorter
Front lens removed. Two full turns exactly.
The shutter removed.
I put the shutter on tricloroethylene for a couple of hours and if came out completly clean. This product is normally used to clean up car engines. The main problem about using this products is that ALL GOES: paint, grease, coatings... It has to be used carefully. 2 hours is enough to remove all grease. 6 hours will take away all the paints. A day will start attacking the lenses.
The shutter cleaned
The viewfinder was filthy. I dismantled it and cleaned it up
Finished