Received the Hartzell Prop C2YR-1BFP/F74972 72", serial # NS3136B from Van's/Hartzell, as well as a rather large owner’s manual.
The owner’s manual made for a great afternoon of reading, each blade has its own serial number.
The manual covers Description and Operation, Installation and Removal, Testing and Troubleshooting, Inspection and Check, Maintenance Practices, Anti-Ice and De-Ice (not appropriate for my installation) and Records.