Having a shed clear out came across this a Yamaha front mudguard stamped underneath 4LO might be of use to someone, thanks for looking.
Yamaha RD250LC RD350LC 4L1 4LO OEM Refurbished Wiring Loom.
Yamaha RD350LC Engine Stay Rubber Mount Bush. Genuine Yamaha. New B23F
Yamaha RD350LC '81 / RD250LC '82 Water Pump Gasket Genuine Yamaha. New B70J
Yamaha RD350LC Front Brake Caliper Bolts (4), Genuine Yamaha. New( 59a)
Yamaha RD350LC? Front Wheel. Original OEM Used, 18 Inch Rim, 1.85 X 18
Yamaha RD350LC F-08 4L0 Front Wheel Rim Original OEM Used 1.85 X 18"