I had a failed nuc where the comb was all drone.
Set up with QC in mid-May. QC emerged but by mid June there were multiple eggs in cells. End of June looked like this:-
View attachment 40854
I intended to shake them out but 20th June I pruned out some QCs from another colony and found 2 VQs emerging. Instead of squishing them I marked them (badly) and let them walk into the nuc. Yesterday saw one of the queens again mated and laying well. Brood looks spotty because she's laid around the drones some of which died as they emerged, little bigger than workers.
Maybe just lucky but impressed by this queen having survived, got mated and brought round a colony after a numpty beekeeper painted her left eye.
View attachment 40855