You probablly already know this,,,Here's how you can always tell a Classic 1CR from an Omega 1CB,,,,the headlight hood.
A Classic 1CR has a headlight hood that has a split back, and also has no lense for the headlight.
The Omega and Classic 3 have the same exact solid back headlight hood,with a lense, and are almost virtually the same exact machine, with a few minor cosmetic changes.
The DS50, DS80, and Classic 1CR have the same speed selector switch,, it has 2 little buttons, one side is normal speed, the other high speed.
The Classic Omega, Classic 3 and Tradition have the same speed selector,,just one sided,,push down, normal speed, push down farther, high speed.
Those tricky Kirby engineers!