OK, good. There are no lines (or any other markings for that matter) on the old timing belt. It doesn't look to be in particularly bad condition but there isn't anything printed on it.
There is something odd on the other side. It looks like the pulley is on backwards. The edge with the lip on it is closer to the engine. Also, there is no triangle-thingy. I wonder if this makes it easier to get the belt on? Some kind of shade-tree trick? Can't be factory right?
Also note how the slot seems to line up with the white paint mark.