Republic of pirates Unique Quarter does not work in modern?

https://preview.redd.it/7s6bhlhpzizf1.png?width=584&format=png&auto=webp&s=c5eb4d35292e9ff6513118ed0bc32e8bfd486729

I was thinking of playing them as I'm sure many of you already are/have. I was wondering if anyone has confirmed if there unique quarter Haven works in modern? My thought is no, and google AI seems to agree with me as there are no "treasure" resources in the modern? Anyone know for sure?