And how do you remove the shutter from it? The lens cells can be removed and the three screws on the back are removed by me, but I can't figure out how to remove the shutter from the board. What size is the shutter--00? What camera was this on anyone know?
Looks like a Graphic wooden board. Put the screws back in so the flange won't turn with the shutter. Then unscrew the shutter from the flange. You may have to remove the rear cell from the shutter first.
Probably a Graflex Minature Speed Graphic, 2x3 Pre-Anniversary model. Those were about a 2.5" square. Should be a Compur #3 shutter. That's judging from it being slightly bigger than the lens board, and the 1/250 top speed.
I wasn't able to remove the shutter once I put the screws in. I did see another lens on ebay that had a similar three screw hole locking ring. And the lens board doesn't feel like wood btw.
The lens board looks like plastic, but that really shouldn’t make a difference. It looks like you have a mounting flange that is being used a a retainer ring with the added security of using screws. It is also possible that there is a pin on the back of the shutter that engages with the lens board to keep the shutter from rotating. I would remove the three screws and try unscrewing the flange.