FINE / C-7 :
A poster showing light, normal wear; used but not abused. This grade can exhibit slight signs of use, but no significant wear. Acceptable flaws might include border pinholes, minor edge dings, light edge creases, and very minor wear along fold lines.
VERY GOOD - FINE / C-5 to C-6 :
An average used poster. This grade allows for a modest accumulation of flaws, including small pieces of tape, light wear and color loss along the fold lines, a dozen pinholes in the periphery of the poster, minor surface soiling, minor border wear including small chip of paper loss in the borders, and minor creasing in the image area. Poster showing light, normal wear; used but not abused.
VERY GOOD / C-4 to C-5 :
A poster that is well used but still presentable. This grade can include a greater abundance of the flaws listed for VERY GOOD - FINE, as well as tears, fold separation, toning (a slight browning caused by oxidation of the paper), minor bleed-thru of writing on the back of the poster.
GOOD / C-3 :
A poster that is heavily used, but would still be reasonably presentable if framed. Posters in this grade can exhibit significant tears, numerous pinholes, significant fold separation, tape on the front (as well as reinforcing tape on the verso), light fading, moderate to heavy soiling, slight trimming.
FAIR / C-2 :
A very heavily used poster. Expect significant damage to the image area that will require restoration.