Nib: Medium 14k Gold No.33
Sheaffer Craftsman 14k Sheaffer #33 nib, celluloid, lever fill Lever-filled, Black with gold trim
Around the mid-1930s Sheaffer started using names for some of the various styles of the Balance that they were selling. The Craftsman would be whatever the lowest-end full length pen was. Many examples have a wire band, like this one, and that is how collectors usually identify them.