Sōichirō Honda - 本田 宗一郎17-11-1906 - 05-08-1991
If you don't have a "secret key", then you do not have to enter anything there.
Tagged in 1978, cb650sc, germany, rc08
misc_confirmity-declaration_cb650sc_RC08_de_1978-26032019-1450.pdf
Conformity declaration Honda CB650SC RC08 (Germany) (1978)