1983 Chef Condor 1.5 oven model number?

I have bought new springs for the lower door but they are too stiff and door will not stay open. I need the model number but cannot locate on the oven. Any idea? 1982/3 brown glass fronted 1.5 Chef Condor Wall Oven. The small bottom oven operates as a grill or separate control as oven.
Have pulled oven out and no label or sticker.
Would appreciate any clues.

Sydney, Australia