Hello! If you don't mind some input from a noob, I thought I would throw in my 2 cents for what it is worth. Recently I went through a similar journey looking for my first Panerai. My younger son always wanted a Panerai and purchased a PAM 111 about 2 years ago. About 5 weeks ago, my older son was smitten with his brother's 111 and he also bought a 111. The 111's are simply an icon but the wrist presence is pronounced and I wanted something a bit more modest in size.
Having said that, I think my requirements were very similar to yours...
- 42mm case size for my 6 3/4" wrist
- Thin case where it easily can slip under a dress shirt and wear flat
- Depending on strap choice, a Panerai that I could wear as a sport or dress watch
- An exhibition case back
- Manual Wind (I take great pleasure winding a mechanical watch)
- No date since I wanted a cleaner look
- Seconds hand at the 9 o'clock position
The model I settled upon was the 512. I am sure you reviewed NigelUK post by now and know that the 512 fit the bill perfectly. There was one aspect where the 512 exceeded my expectations and that is the magnificent design of the case. The curved lines on the case, the belt line that runs around the circumference, etc. really makes in a gem in my mind. Beautiful design!
Note: I believe the 512 was later replaced by the 574 with a newer movement, but I don't know if the thickness is the same as the 512. I'm sure someone on the forum can provide more detail.
Below are a few pictures of my 512. I believe if you click on the images it will forward you to IMGBOX where you can view them in greater resolution. Enjoy the hunt for your Panerai!
Size comparison to the 111 (44mm)
My 512
