Locating the Serial Number
HA5C: Stamped into the nameplate or below the handle on the raised portion.
H5C/S5C: Located on the top between the spindle nose and the grease fitting.
HRT160/210/310/450/600: Located on the lower left-hand corner of the front below the platter.
HRT7/9/11/SRT: Located on the top within one of the milled slots.
TR110: Located on back or center rotary.
TR160/TR210/TR310: Located on the base in the lower left-hand corner.