Combination Cook Stove

Hi there, first post of which I'm sure there will be many to follow. This stove has an oil burner on the left side and gas on the right for (4) burners and the oven. I believe the fire box was originally coal or wood fired and something tells me the oil/kerosene? burners were an aftermarket add on. My questions are, would anyone know what make/model this is, and possibly a date? Also, The gas cook top still works fine but I'd like to put the wood coal back to working condition for the oven to be used. The fire brick is missing so any ideas how or what was originally in there would be very helpful.
Thanks to all.