In the illustration above, the mainspring barrel is on the left; the fourth wheel is on the right and is the only train wheel,
link except for the escape wheel, which is visibly rotating. That wheel rotates
link once per minute, and if you want to have a seconds hand, the easiest thing to do is allow the
panerai submersible 47mm lower pivot to extend to the dial side and put a small hand on it: Voila, you have a seconds hand.