The listing stated it was original. I had looked at his other items. The listings I randomly checked did not claim to be original so he skirts around ebay's policy but this one caught my eye when I seen it say original.
I rarely respond on these questions, but thought I would today. My simplest rule is the quality of the printing. Notice on this the letters vary in thickness, and height. The es thicker than ub in tubes. The S in Sinclair below the line level. Those sorts of mistakes weren't made back in the Old Days when people had pride in Craftsmanship. This seems to be a common mistake in most fakes, and easy to spot. Ed.