How many coins in an average auction?

If you look a at typical Bowers or Heritage auction about how many coins are in it? Looks to me that the Heritage Long Beach has 4,718 coins, does this sound right for that auction?
Just curiosity going through my head.
Just curiosity going through my head.
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the regular auctions tend to have high 3 thousands to low 5 thousand and the big ones from heritage (platinum night-ie-*fun*) tend to have 6-8 thousand