Vintage Grail | Luxury Watch Store on Instagram: "The “comet” Nautilus collectors know by heart. Ref. 3710/1A-001 pairs a deep black dial and rare Roman numerals with a classic steel case and integrated bracelet. Its nickname comes from the arcing, comet-tail power-reserve at 12—the small hand tracks mainspring energy as you wind or wear it, so you know when it needs motion; it was also the first Nautilus to add a complication beyond the date (1998). See it in our boutique at Vintage Grail, The