This watch is a gen J series PAM
You might have a pretty decent Davidsen copy, but the watch in the original post is definitively a gen.
Looking at the caseback pictures closely the J series bar release pins (for which you use the plastic pin tool) are clearly evident on the back of the lugs.
The dial configuration matches at least 3-4 dials for gen 240s that have been posted around the net.
The deployant and strap are identical to the J series deployant and strap on my gen J series PAM, and none of my reps deployants/straps come even close to the look and feel of these.
I can guarantee you that your Davidsen watch, while it may have a J serial or not, it does not have bar release pins on the back of the lugs.
But if someone copies the J series anti-piracy measures, fixes dial issues, and pairs them up with good cyclops and datefonts they are going to sell a lot of reps and Panerai is going to have a shit fit.
I refused to buy a gen PAM until the J series anticounterfeiting measures came out, and I will not buy another gen PAM until Panerai makes another round of antipiracy measures, unless it is an in house caliber like the 3 barrel 8 day power reserve.
J & A, are you listening???