the authenticity of the watches in the video, I can say that if the scratches are real, it is not a surprise to me. I’ve collected Pateks for over 20 years, and what I have seen over the last 10 years are shocking. My 5370P’s seconds hand was stuck and stopped moving a couple of mins thx after purchase. Look at another post in this forum of a 5370P with oil leak to the dial belonging to a well known collector.