Quite the puzzling scenario with the Citation bag... I agree -- the early convertibles all had wide bags.  The model 66 came out in 1958 and had a narrow bag -- with the "slim silhouette" look.  I believe that early model 65s had the word "Citation" printed on the bag.  I have a picture of an early model 65, I think the photo was used on the early version of the model 65 owners manual. This photo on the clearly has the word "Citation" on the bag... but it's also a wide bag, not the narrow bag.  So I'm not sure how that timeline of wide vs. narrow bags plays into the history of that bag on Chad's machine.  Perhaps it was issued as a replacement in the late 50s? -- maybe with some bag material that was previously unused?  The hole-pattern and bag material also looks to be that of similar to the model 32... also a somewhat soft vinyl.  It's hard to tell from the pictures that are posted.  It could be the early Citation bag material as well. Is it yellow with pink letters?  The actual Citation bag was sort of a creamy yellowish-white color with red letters -- most, like mine, I think have yellowed over the years.

Also, the reinforcements in the bag topper (two little indentations on either side of where the spring attaches) wasn't really apparent until the spring and narrow bag combination.  My earliest machine to exhibit this is the model 32. 

Chad, you're going to have to do some asking around about this... perhaps to Jeff and Tom.  It's truly puzzling!  Hang on to that bag!!!

I'll post a few pics of what I'm talking about.

Closer up...

Original Citation bag

Model 32 bag, soft vinyl.  Reinforcement "divets" on either side of the spring (only one visible in this picture).

Better picture of the "divits" next to the spring on my model 36 bag.  Also a different vinyl material and hole pattern than the earlier model 32 bag.