Found the following hamletworks.org entries referring to line 55

View Commentary Note for 53
53 Bar. In the same figure like the King thats dead.1.1.41

View Commentary Note for 55
55 Bar. Lookes {a} <it> not like the King? marke it Horatio.1.1.43

View Immaterial Textual Note for 55
55 Bar. Lookes {a} <it> not like the King? marke it Horatio.1.1.43

View Material Textual Note for 55
55 Bar. Lookes {a} <it> not like the King? marke it Horatio.1.1.43