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"1974" MK2. Norton had no model years in the normal sense. Since you have the "hamcan" air filter, assuming it is original, it's not an "A" - they had a plastic air box. Your "frame number" is actually the certification label (VIN Plate/Frame Plate) number. The frame number is stamped into the timing side metal of the headstock and will be something like 850 F xxxxxx where xxxxxx does not match the engine serial.Learn more:[URL unfurl="true"]https://gregmarsh.com/MC/Norton/Info/CommandoID.aspx[/URL][URL unfurl="true"]https://gregmarsh.com/MC/Norton/Info/CommandoSurvey.aspx[/URL]
"1974" MK2. Norton had no model years in the normal sense. Since you have the "hamcan" air filter, assuming it is original, it's not an "A" - they had a plastic air box. Your "frame number" is actually the certification label (VIN Plate/Frame Plate) number. The frame number is stamped into the timing side metal of the headstock and will be something like 850 F xxxxxx where xxxxxx does not match the engine serial.
Learn more:
[URL unfurl="true"]https://gregmarsh.com/MC/Norton/Info/CommandoID.aspx[/URL]
[URL unfurl="true"]https://gregmarsh.com/MC/Norton/Info/CommandoSurvey.aspx[/URL]