I'm thinking a Woodfast myself, I have the Gilbro super smoother and can see some obvious differences, though the general layouts are similar. There is nothing to indicate effective working width.
I suspect that the small badge at the end of the fence is a retailers mark rather than a manufacturers mark. For the manufacturers mark I would be looking at the 'badge' on the side of the machine between the cutter head and motor. I would be installing a guard before you do much work with it, it would use the swing away spring loaded type guard that would normally mount in a hole on the left side of the infeed table just ahead of the rebating support.
I used to be an engineer, I'm not an engineer any more, but on the really good days I can remember when I was.