If you need any camera that's around fifty years old to be a reliable working tool you need to add to the price you pay the cost of a full service by a professional not just a CLA, I have a Contax 11 that I've had for 60years that's been serviced twice in that time. The roller blind slatted metal shutter is held by two silk cords that over the years tend to perish over time and probably will need replacing.