I find the array of Imperials confusing. I love every one I have, but I could not identify which model any of them are.
Sheaffer's naming scheme is unlike any business i can think of. The pen, is named after the TRIM level...
You can have a Statesman thats a snorkel, or a Statesman that's a touchdown...
or a Sentinel that is a vac, a lever filler, a snorkel or a touchdown... (gold nib, steel cap with gold band)
or a Crest blah blah blah (gold cap)
It's mind blowing to me. It's like if someone asked you what kind of car you drive and you said a "Toyota SR5" not bothering to specify if you meant a Tacoma, 4Runner, Tundra or Sequoia!
Parker's naming scheme makes more sense. Its a Parker "51" with X cap. Like saying a Toyota 4Runner SR5. Make, Model, Trim level.
Further confusing things is that they give trim levels a NAME...
Yes, I know, there's the confusion with the Special and the Standard... But generally, it is a less confusing system overall.
Not saying i don't like the pens (my growing collection of Snorkels makes it clear that i DO like them!) Just think the naming scheme is weird.
TLDR: You are not alone in your confusion WRT Sheaffer's naming, especially of Imperials
Just give me the Parker 51s and nobody needs to get hurt.