If you take a 52 to 54 cm bike (seat tube c-c), not many of those are in that ball park, to my eye. For me, height is a dubious way to size, because it ignores whether you are short-waisted (long legs) or long-waisted (short legs). If you're going by top tube, I am 5'6", and my good TTs range from 52 cm to nearly 56. A good tell-tale for bike size is the head tube. The Scapin and maybe the Pinarello are the best-pedigreed frames up there, but the head tubes tell me their conventional sizings are in the large or extra-large category. As nearly 5'6" I would not consider those two, and your 175 cm translates to 5 foot 9 inches. I don't slavishly size based on standover clearance, but too high of a top tube reminds you painfully every time you suddenly get off the saddle when you stop. And your smaller ones look like too many problems/lower quality.

Do some more looking before you pull the trigger. And read up on measuring pubic bone height, and the formula for getting reasonable first estimate of your vertical bike size based on seat tube length. I suspect you are more like 54 or 55 cm, maybe with a 54-56 TT for a racy roadie and not too much stem.

As far as the tubing quality, if you can't go by the frame stickers you just need to ride them, but sizing is before tubing. For modern bikes, to base bike size on height is some thing the manufacturer has sorted out. For older bikes like these, it's better to use your body measurements.