For more general notes, see the page for the Imperial line.
This is the least expensive pen that is entirely of the Imperial specification; not only the barrel and blind cap derived from the PFM but also a gracile inlaid point. It was also the least expensive of the line to bear a white dot, and thus the “Lifetime” badge during its brief run.
Production Run: 1961 – 1973.
Cost When New: $12.50 (for modern value, try this calculator).
Size: 13.5 cm long capped, 14.3 cm posted, 12.0 cm uncapped.
Point: 14k gold inlaid.
Body: Polystyrene.
Filler: Touchdown, capacity approx. 0.7 ml. or cartridge, capacity approx. 1.1 ml.
Sheaffer Imperial IV with matching pencil
This is a slightly less grand box than my Lifetime 1500 came in.
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.