This camera is a Graflex RB(rotating
back) Series B SLR camera, that
was also often used as a press camera in the beginning of the 20th
century and is still very common and easily obtainable. I've managed to
date this camera with the help of the serial
number to somewhere mid 1930's.
This camera is a very good camera to use in my opinion, although for
fast action photography it isn't the best choice, because you can't see
your surroundings when looking into the viewfinder. You should also
for lots of information on the great presscameras made by graflex.