Not a Classic Omega!
That is a Classic 111! It was introduced in June of 1976, and it replaced the Omega, which was chocolate brown.
When I started selling Kirby's it was the Omega, and the first Kirby I bought was the Classic 111.
That is a fantastic picture, by the way, that was the first time Kirby went with the plaid bag.
Interestingly, Kirby intorduced red in 1953, and was the primary color over the years. As far as I know there was only one green model, the D-80, and one blue model, the Tradition. Prior to that all machines were black or grey. I have a number of Kirby models starting tith the prototype for the Vacuette (Vital Rand) two Vacuettes, I-C, (1935) 2-C, (1938?)512,(1952)515, 517, Sanatronic, D-50, D-80, Classic, Classic Omega, Classic 111, Tradition, Heritage, and G-4. All are in perfect condition, however, other than the Vital Rand and Vacuette, all are in storage until I can locate a place to display them.
If you have any questions about Mr Jim Kirby, ask me, I've been researching him for years.
Akex Taber.