Just received my crown graphic today. Bought off e-bay. It seems in very good condition. I was wondering how old it is. ser#981026.
Where does the battery go for the top rangefinder red button?
The lens looks great but I can't seem to set the shutter to the 400 mark. I don't want to force it.

Look on the back of the rangefinder and you'll see a door about the size of a AA battery (Hint hint) push in slightly and slide to the left (I think)

Super matic shutters are known to be pretty stiff going frrrom 1/200 to 1/400, there's a big spring in there you have to over come. Try harder with your fingers, if you think you need a hammer and chisel then something's wrong.

Thanks for the quick response.