Between heavy clouds and rainshowers I managed to photograph my No. 4 Folding Kodak for the purpose of making a new photosynth. Here it is.
This is a very early example with serial number 77. If you rotate the photo until you can peek into the back, you can zoom in to see the number. Also notice that there is no key or knob in the top lid. All the other Folding Kodaks I have seen have a key or knob on top. I think that only the very first cameras don't have a key on the lid and that soon after introduction of this model, it was changed.