Sheaffer Flattop fountain pen

Sheaffer began manufacturing this classic pen in 1920, with minor modifications until the 1930s. In 1926, it began numbering the nibs (as shown here), and after 1927, it no longer marked the PAT dates on the pens (which can still be seen here). There is a small dent on the ring of the pen (see separate photo). The pen comes with a one-year warranty.