Congrats to your new watch.
I met Eng yesterday with his 5218-202A. He told me the story of the watch....which is the very first 100 piece that Panerai sent to Italian Navy Officer. I couldn't sleep well last night my friend as that gorgeour non-matching kept haunting me everytime I tried to close my eyes.
The PreA-4 is somewhat a bit different but the tritium indexes on the black dial and black case is very beautiful and charming.
Wear it in the best of health.
Cheers