Peter.
I am not sure that we have this correct.
I have linked the the four registrations, but according to Joe Baugher, the original registration, 43-3318, which is shown currently as the cn, (easily changed) has the cn as 100-20644.
I propose we state this as the cn and add 43-3318 and its one time Canadian reg, CF-OGQ, to the current four grouping.
Malcolm.