Pen conditions

PM = Pristine Mint. Untouched, unfilled. No marks or spots whatsoever. Crisp colour. Never filled. This condition rarely exists. Absolute perfect condition.

M = Mint. Perfect condition. No marks, spots or brassing. Crisp colour and shiny finish on plastic pens. No discolouration. Working condition. These pens can be filled. Not filled pens should be noted. NOS pens should be in Mint condition.

NM = Near Mint. An excellent pen, but with parts of duller finish or nearly invisible surface scratches. No brassing, virtually a Mint pen, but with small signs of usage.

VF or EX = Very Fine or Excellent. Visible, but not accented surface scratches or parts of dull finish. More accented scratches where the cap goes on the butt and body. Otherwise fully functional and crisp finish with no brassing.

FN = Fine. Visible surface scratches or dull finish. Signs of wear on the nib or light discolouration of the section or around filling lever or button filler. Light brassing or small lip crack. Clear signs of usage, but still a better than average pen.

VG = Very Good. Some scratches and dull finish. Signs of everyday usage on nib or body. Brassing, light all over discolouration. Minute lip or body cracks. Loose cap rings or body rings. A used pen in average condition.

G = Good. Scratches, dull finish. Nib and body well used. Brassing, discolouration. Small lip or body cracks. Light cap or blind-cap misfit. Loose cap rings or body rings. Worse than average condition, but still a fully functional pen.

F = Fair. Severe scratches and marks. Severe brassing. Discolouration. Small lip or body cracks. Cap or blind-cap misfit. Loose cap or body rings. Still functional, or functional with light attention.

P = Poor. Severe scratches and marks. Severe brassing and discolouration. Severe cracks or essential parts missing. Cap, bodyrings or lever missing or loose. A not functional parts pen.

(source: http://parkerpens.net/codekey.html)