Interesting, Jan. Between your coat, the Isaia, the one in Banis's photo (Volpe's work?), and mine, it would appear that this welted-flap-in-a-patch type of pocket is not at all uncommon in Naples. Yet, it seems very odd compared to the other envelope-style pockets around.
I like your pockets the best of all the coats posted in this thread. Great example of giving your tailor a little direction and then letting him execute.