Here's a Personal-size leaf from 1996 that showed up on The Daily Planner, so of course I snapped it up. I don't know how long these legacy leaves will be available. All I can recommend is checking back to the site fairly frequently as I do.
I'm fascinated by this form because it can hold so much information. Basically, there's a space for everything you need to know about one of your customer's accounts. I'm especially fascinated by the back side (click the image to get access to it). There's a table for tracking several years' worth of monthly purchase amounts, like a miniature Excel spreadsheet.
I've learned two things from this form:
1) At one time, it was truly possible to conduct all of your business with a Personal Filofax (this form is copyright 1996).
2) To be useful to me, I'd need this form on a larger sheet of paper. I know many Filofax purists decry the additional sizes like A4, A5, and the defunct Deskfax, but for me, I'd need this in at least an A5 to find it usable.
In other news, I calmed down on my format crisis when I realized that I don't have to do everything all at once. I've decided to stick with the A5 format "for now." I've ordered the pieces I need to implement the DayRunner forms that worked for me—a month-on-two-pages and a day-per-page calendar.