Found the following hamletworks.org entries referring to line 421
View Commentary Note for 419
419
Hold you the watch to night?
1.2.225
View Commentary Note for 421
421
Ham. Arm'd say you?
1.2.226
View Immaterial Textual Note for 421
421
Ham. Arm'd say you?
1.2.226
View Material Textual Note for 421
421
Ham. Arm'd say you?
1.2.226