Most visitors online was 1660 , on 12 Dec 2020
Treat that set lever with tender, loving care. I think most will agree it's the 571's Achilles Heel. Not that you'll have to use it much on a properly cared for 571.
I just purchased a 571, serial S548417, and to my surprise it is stem set. I looked at it for a while trying to wrap my head around it. Then I remembered this thread and came back to it to firm up my thoughts.doug sinclair;516764 said:I've owned two 571s over the years. The first one I had this problem with, I sold in the late '80s. I ordered parts form S. LaRose, and from my Canadian source. My Canadian source came up with the parts I needed, and S. LaRose was only able to come up with a kit to permit you to convert a 571 from lever set to stem set. I kept those parts. In '09, I bought another 571 which ended up with the same problem! By this time, I was unable to locate the required parts, so I used the conversion kit to convert the 571 that I now have, to stem set. Imagine the consternation THAT will cause at some time in the future when this watch ends up in the hands of a knowledgeable collector.