The code-key could be posted along with the pen-list, if desired.
This is a standard for shortening the description of pens, either for personal use or when offering pens for sale.
Hence a "47" marking on a 1930's pen indicate that the pen was produced in the fourth quarter of 1937, not 1947, which is a common misconception.
Left Oblique has opposite slant for left handed writers 14k 80 Needle Point 18k 81 82 83 84 85 Extra Broad 18k 86 Extra Extra Broad 18k 87 Fine Oblique right hand 18k 88 Medium Oblique right hand 18k 88 Extra Broad Executive-Developed for people who like to write boldly and rapidly and want a special flourish to their signatures 14k 89 Broad Oblique right hand 18k 90 91 Extra Broad Oblique right hand 18k 92 Extra Extra Broad Oblique right hand 18k 93 Medium Oblique left hand 18k 94 Medium Italic 14k 95 Broad Italic 14k 96 Fine Oblique left hand 18k 97 Fine Italic 14k 97 Broad Oblique left hand 18k 98 Fine Italic 14k 98 Heavy Italic-Expressly designed for italic handwriting. To be stamped 12K or higher the layer must equal at least 1/20 the total weight of the item. Signs of wear on the nib or light discolouration of the section or around filling lever or button filler. Clear signs of usage, but still a better than average pen.
Right Oblique has the largest surface on right sided of point. 0.000039 inches) To be stamped 10K the layer must equal at least 1/10 of the total weight of the item.
Produces heavy lines on horizontal stroke, thin lines on vertical stroke 14k 70 Medium Stub-a heavier flat point for shaded writing and printing.
Excellent for heavy lines and bold signatures 14k 69 Fine Stub-A flat point for delicate shaded writing and printing.