Schneider 90mm f8 Super Angulon 5x4 Large Format Lens copal 00 shutter 5x4 4x5"
The shutter is a copal 00 size. Smaller than a copal 0 size and therefore a little bit more fiddly to use. Shutter fires okay at all speeds. Small shutter or not, this is a still a good lens and should perform well.