Before the pistachio was bred into different varieties, they would have been predominantly male or female.
But, the Antep and Gold Crop / California Gold were reportedly bred to be self fertile, after several generations.
In my experience, self-fertile trees of any kind are still much more productive, when planted near others, because this still results in more chances for pollination -- even though the tree is technically capable of fertilizing itself.
If you're able to locate these seeds, again, I keep a modest amount of spending money, barter, or pay it forward.
Thanks for posting in my thread.