Sorry, yes, I mixed it up with the black discs Blumbly originally had. Bare steel, top and bottom, flat surface (no vortexing fins aside from the blades) yet i have seen this set up far less than the cream paint set up, it's not impossible to assume the unpainted disk an abnormality, test, machine failure or emergency stock part based on what i have observed.
Alternatively, maybe the bare disc was originall, but overly prone to rust at the blade holes in a short time, which would be potentially very dangerous, I'll see if this era is covered in my Victa recalls listing.
