You are about as far as you can get from where Jacob Waltz lived and died, and still be on this planet Sadam.
I don't think he ever did any digging in Pakistan, but hey, there are quite a few who don't believe he found anything in the Superstition Mountains either.
If there IS any treasure site where you live, it probably belonged to one of the older dynasties that controlled the region over the millennia.
The coin and signs likely relate to one of these Kingdoms or Empires, rather than any of those from the US Southwest.