A three year old "Egg Donor Queen" finally expired. I let this nuc grow two replacement queen cells. This morning I observed that one of them had emerged and that she had destroyed the other cell. I then located her, she wasn't outstanding, but was a nice looking virgin.
In a few more weeks I hope to discover that she successfully located drones and is well mated. All of my own hives are still drone-free, though the strongest hives have fair quantities of drone brood, but still quite a ways away from abundant sexually mature drones. It is possible that feral colonies have plenty of drones, and that my virgins are possibly mating with a majority of these feral drones anyways.