Maker: Sheaffer. You may be looking for a different model of Craftsman, depending on vintage; there is the Balance, the Touchdown, or the TipDip version to consider. This page refers to the Triumph era version.
At the low end of the line-up, this is one of the models that one is somewhat hesitant about declaring out of the Balance run until a rather later date. There are, though, several points of difference between this and an undoubted Balance– the textured section, the separate metal threads, the clip and the “wire-rim” cap band. That last item is a point of some confusion, as it was common to the lower end models for much of the Triumph era– the only thing telling apart an Admiral and a Craftsman is the point; in the latter case, it will bear the number 33 on its impression. Do not fall into the error of basing the identification of a pen solely upon that band.
Production Run: 1942(ish) – 1950 (this pattern remained in place through the first couple of years of Touchdown pens, until the Thin Models appeared).
Cost When New: $3.50 (for modern value, try this calculator).
Size: 12.3 cm long capped, 13.7 cm posted, 10.5 cm uncapped.
Point: 14k Gold.
Body: Celluloid until 1947, then Forticel
Filler: Vacuum, capacity approx. 1.2 ml or lever, capacity approx. 0.9 ml. After 1948, only lever available.
Sheaffer Craftsman, green striated vacuum-filler.
If you are relying on the preceding information to win a bet or impress a teacher, you should read the site’s scholarly caveat. Remember, this is the internet, and it’s full of bad information.