Typical marking will include the resistance value in the form: 471

Part number	Datasheet
Farnell: 9357017	Bourns, 4609X-101-471LF
Mouser: 652-4609X-1LF-470	Bourns, 4609X-101-471LF
RS: 522-4273	Bourns, 4609X-101-471LF

This component must be fitted the correct way around. Pin one is indicated by a dot on the package as illustrated below.