[Music in a bottle]

I have 2 Philco model 70s. One has the large tuning control knob (Rosette Style) and the tone and volume controls are the same style but slightly smaller and the power control knob is simular to the smaller knobs you'd see on the model 21. The other has the same large tuning control knob (Rosette Style) and all the other knobs are simular to the model 21s smaller knobs. So which is original. One of these model 70s is a parts rig. 8)