I have finally figured out how to attach pictures! I recently acquired my first two planes. I'm interested in finding out any information about this transitional plane. How old? Manufacturer? The only marking is "FULTON WARRANTED" on the iron. The lever cap has an interesting geometric design on it. The rear handle has rough marking on it that look like rasp markings. I' also interested in tuning it. What's the best way to flatten the sole? Sandpaper on glass? Another plane? Thanks in advance for the info.