I am curious what this marking on my 1973 front disc means ???

It is on the side where the disc meets the hub.
Dennis

DennisMo said:

It is on the side where the disc meets the hub.
Dennis

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Dennis, I really don't know, but it appears to be some type of ancient Egyptian hieroglyphics. Perhaps it was made in Egypt while King Tut was doing his thing 1332 AD. You never know where Norton sourced their parts.