However, it wasn't until I got it home that I realised that this is not the same as my other rulebooks -- it is the comparatively-rarer first edition. I had never actually seen this one, but I had heard a little about it. I flipped through it:
As you can see, the covers are slightly different; the Revised Edition I played as a kid is on the right.
The first edition is typed rather than properly typeset, or at least that's what it looks like. It has less art, or so it seems. Content-wise, the original edition is shorter, and lacks most of the useful bits at the end, like a character sheet.
The skill section in a Palladium game is ordinarily difficult; this seems like an even more appalling version of that experience.
Aaaaaand then there's the infamous insanity table, which contains some stuff that I do not think we would put in a game today. It's an interesting look at what widespread public attitudes were like just 31 years ago, I guess? Hrm.
Although I'm never likely to use the first edition rulebook in play, it's a cool curiosity, and for 75p I'm pretty satisfied.