For what it's worth, the source of the information you quoted from the database is someone who I have disagreed with a few times in the past - including on the subject of Facit portables. In this particular case his comments were posted without any mention of where he got his information from, so naturally I'm left to wonder if it's just speculation on his part, or actual fact that came from a reliable source. Not to get off-topic, but I've found that our hobby is full of enthusiasts who make assumptions based on little to no evidence and who will state their opinions as though they were fact. And since some of these collectors take exception when you ask for the source of their information, I've completely stopped commenting on the statements of others in the database.

Back to your question. The information you're questioning from the database is poorly written and consequently difficult to understand. I wouldn't blame the author as English is no doubt a second language for him, but I also wouldn't have inserted that comment in the Facit serial number list without clarifying exactly what it means (and verifying the source of his information). As it stands the comments just cause confusion, as is evidenced by your legitimate questions here.

I would completely ignore the comment unitl it is better explained. However, if you can't wait until then, you could read through all of the author's Facit database entries and try to piece together his logic for the different "series" designations. I glanced at a couple and didn't have the patience to continue once I realized he was using the photos on Facit manual covers (and their print date) to determine which "series" a machine belonged to. He also claims the "P" stands for Privat, but then what of the "T"? The common consensus used to be that TP stood for "Typewriter Portable", but if it is a Swedish acronym (Privat is Swedish for personal), shouldn't the acronym be "SP1" and "SP2" instead when you consider the Swedish word for typewriter is skrivmaskin?

With respect to the other part of your question, I have examples of both models, but to be honest I haven't as of yet spent any time trying to figure out the differences between them. Considering the two models coexisted, you would imagine that there must be a few substantial differences between them other than a differently shaped case. My first guess would be different feature sets, but both models - to my knowledge - were available with, or without, a tabulator. Differerent key sets? Nope, both had 44 keys. Maybe it's something as simple as the TP1 having been produced first, and then the TP2 was introduced as a more modern design, but Facit decided to continue offering the TP1 to give buyers a choice?

It's a good question you've asked, one I'd like to know the answer to, so please share it with us when you figure it out.