Just received my Piatnik cards. The corner of the extremely flimsy case was cracked so I just set up an exchange.
Being that the case was not sealed...only the cards, I opened them up to give them a feel. I’m very glad I did not spend more than $15. Not that they are bad cards but when I brought out my other decks to compare them with, they are almost exactly if not completely the same feeling in texture and stiffness as my DaVinci and Guild decks. I’d feel confident in saying they are the identical card stock.
Also, Being that Modiano owns DaVinci and that my Guild cards feel exactly the same as my DaVincis ..... and came in a Modiano box, I’m suspicious that Modiano could be the supplier for the card stock.
If you want the identical feel for less money, a real card case, and two cuts cards, just buy these
https://www.amazon.com/Vinci-Italian-Plastic-Playing-Regular/dp/B002X32MIA