For more general notes, see the page for the Imperial line.
The Imperial VIII is the top of the line for those bearing Roman numerals; above this is Imperial Triumph and Imperial Masterpiece. It is the same trim level, more or less, as the PFM V, with an all gold-filled cap setting it above its stable-mates. Interestingly, it appears to have not been included in the brief run of Lifetime brandings. One might also look in vain for the Imperial VII; Sheaffer was apparently leaving space in the line-up for something that never quite developed, so the next stop down from here is the steel-capped Imperial VI.
Production Run: 1961 – 1973.
Cost When New: $17.50 (for modern value, try this calculator).
Size: 13.5 cm long capped, 14.3 cm posted, 11.9 cm uncapped.
Point: 14k gold inlaid.
Filler: Touchdown, capacity approx. 0.7 ml. or cartridge, capacity approx. 1.1 ml.
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.