Model 503.
101.
20/0F01 AK10
Annual Calendar, only needs to be reset on March 1st.
Best prices currently online range from $5,558.
98 on TimePiece.
com (which I doubt they can even source) all the way up to $10,200 on Swisswatches.
com and SwissLuxury.
com and of course many others that are higher.
I say it's LNIB because I did once take it out for a few photos around the home, but you can see from the photos (look at the underside of the strap) it's not worn anymore than a display model would have been in store.
I bought it new and love it, but it doesn't compete with my Sky-Dweller (also an annual calendar) and Concord El Primero Triple Date so there's no point in keeping it.
Inner/outer boxes, booklet, warranty card, document wallet and Corum pusher (for setting date and month) all included.
Best feature is the dial goes from grey/charcoal when in soft or indirect light to brilliant shades of blue when in strong light.
Specs:
42mm stainless steel case, 10.
65mm thick, transparent back with glare proof sapphire crystal, stainless steel bezel, sapphire crystal crystal with anti-reflective treatment, charcoal grey dial with hourly nautical pennants transferred on the flange, inscribed admiral's cup transferred on the dial, guilloche finishing, applied rhodium-coated hour indexes, Corum logo applied on the dial, 31-days-circle transferred on the dial, caliber co 503 automatic movement with hours, minutes, centre seconds, date, month, approximately 42 hours of power reserve, black crocodile leather strap, triple folding clasp buckle.
Water resistant to 3 atm.