Found the following hamletworks.org entries referring to line 3289-90

View Commentary Note for 3289-90
3289-90 Ham. There's another, why {may} <might> not that be the | skull of <of> a Lawyer, 

View Material Textual Note for 3289-90
3289-90 Ham. There's another, why {may} <might> not that be the | skull of <of> a Lawyer,