Rotor Markings, Help needed.

Gday,
This is not for a Z1 but any help would be great.

I have 2 rotors, OA and 6T on my H2. Its and early H2, [ 3033 ] which would be the correct one as Im reverting back to a single set up. This is a 1972 model, I believe that is was made late 1971 by the build #.

Thanks Gum

Someone must have an idea ??????? Please, thanks Gum.

Im not sure if it applies to the other Kaw's but heres a link for the Z-1 rotors.

www.z1enterprises.com/reference/z1-numbers-guide.aspx

Fish