My most likely ersatz 5500 Air King "Explorer". Serial on the case is from the 1980s so probably a redial. Have considers a new dial for it but it looks so nice as is. So I just call it the NAFF E
Thanks for the kind words about the Tank XL. For me the rectangular movment was a huge selling point. Its quite rare to see them in a watch. I too am not fond of a rectangular watch with a round movement in it. But that is what most companies do because its easier and cheaper for them to pull a smaller round movement off their shelves that is used in another watch they make, rather than to trying to make or source a rectangular movement for a rectangular watch. I came to appreciate form movements when I was looking at VC Historique Carree (which used the elipse shape movement of a JLC Reverso). Glad to hear the Speedy Pro is a keeper...its a classic. If I were you, the only reason to consider letting the JLC go, would be if you found a slightly more complicated one that caught your eye. JLCs are just great watches and a great value!
Warning: Spoiler! (Click to show)
The Jumbo on the other hand, now that is a comfortable watch I had the opportunity to buy a 70s RO, but for some reason I never went for it. Very nice on the hand!
Instead I got this, and very happy with my choice The bracelet is like a playful cat´s tail around my wrist. And everything else about it is just about perfect. It´s surely worth every other dollar I paid for it
I tried on the 15300 and its larger brother the new 15400, its a nice watch, but neither was for me. The Jumbo, as you know is a vastly different watch, and just suited me perfectly. No regrets on that purchase.
The 5712 is really a stunning watch! IMHO, its really the only Nautilus with complications that works. I don't care for the chronograph version, the thickness and pushers make it look clumsy, and I don't care for the subdial within a subdial. The annual calendar version is nice, but I don't really like the apertures on the dial.
I love the asymetric layout of the subdials on 5712. It makes great use of the dial space while still maintaining classic attributes like the ridged blue/grey dial & stick markers, and the bracelet is beautiful. IMHO the only modern Nautilus models to consider are the 5712 and the 5711 each is a beautiful and elegant sport watch. Enjoy it an thanks for sharing a photo of it.