Now that's a good question! I don't know, I just suspect - from the tatty marking, clipped wing, no unsealed brood in the nuc when I got it (despite there being pollen and stores and being good weather), that within a couple of weeks the workers superseded her, despite there being by then plenty of space in the hive and plenty of forage to go for. If it was definitely knowable, I don't suppose the supplier would risk it. I mention it because another beekeeper has - quite unprompted - raised the same suspicion.
Enough said on this, I guess: it seems I'm not alone in thinking it sharp practice.
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