Hi! This is another Optimus 703F. I hace the original burner, but the dom and the caps are not (they are Optimus but not sure if they match the burner) , flame protection for the burner is missing. What is different on this tank compared to all the others 703F 's here is the fyllning cap what has integrated the air screw in the cap. From what i was reading on some page (i don't remind where), the change to a combined cap ( fylling cap +air screw) was a metod to cut the cost. Is someone who can confirm that? On the broschyr from 1933 apears to be that type of fylling cap. https://classiccampstoves.com/threads/1933-optimus-brochure.14784/
