Hi, I purchased this nice ladies watch recently. Hallmarked 18 K as per photos. I know Benson Ltd generally sourced good quality Swiss movements for the watches after they stopped making them. As this is 18K I suspect it might have a quality movement to match. I can't identify movements and I don't want to take the face off if possible to look for a trademark. I'm an amateur and afraid of damaging the watch if I start pulling it apart; I've previously removed faces only off old broken movements. Many thanks in advance for any assistance, thank you, Geoff.