A strong argument can be made that the Sheaffer PFM was the very pinnacle of Sheaffer pen design and manufacture. Released in the late 1950s and continued into the mid-'60s, it was elegance, innovation and performance wrapped into one pen. Our Sheaffer PFM-I in kelly green is the base model with a palladium-silver inlaid nib and chrome trim. We restored this one with a new ink sac and snorkel. The point seal and O-ring look and perform as if they were recently replaced before we got the pen. No cracks. A little wear from past use. You will write a smooth, firm medium line. When we dipped this pen, it started as a fine-point nib, but the more we wrote with it, the more it turned to a medium. 13.7cm capped.