Correct, but I'm not sure how you could tell because I couldn't. It was easy to fake. I just zoomed in and copied the lower left vertical bar from the 8 and stuck it on the 5 as you seem to have guessed. Please note that all my pictures are real except this one. A daytime picture might have showed a square box in the copied area but the night time pic is all black so the lines did not show. I still could have touched up a daytime picture with a slight blur or just did the extra segment one pixel at a time.
My point was going to be to show that you can't tel for sure.
