Great that you've decided you want to play accordion. JimD on this forum is a professional and expert in these matters, hopefully he'll pop in with a word before long.
If you can't find anything about the maker's name that often indicates an instrument that was nothing special - perhaps it was an "own brand" for a music shop or accordion school.
The Camroni is a fine looking instrument but clearly old. That's not a good thing in accordions, they are complex machines, a portable organ really, and unless everything is in good shape, they don't play proper. With older acordions like the one you are looking at it is very easy for the cost of having repairs done to be greater than the value of the instrument. I'd suggest being wary of this one unless the seller can prove that it has had recent refurbishment work. One specific example - each reed plate, and there are at least 130 in this instrument, has two valves so that the bellows air goes the right way. These valves, often leather in older instruments, will dry and curl and crack over time and not do their job. A practical point, instruments of this era have long piano keys which can make them less comfortable to play.
As you say, it looks great, but I'd suggest treading carefully unless the price is very right and it plays well as far as you can tell.