A mere 10mm high, this Master Ultra Thin offers a suitably majestic backdrop to the romantic moon-phase complication. Both the enamelling and guilloché engraving of the dial are executed by hand in Jaeger-LeCoultre's own workshops; the tilt of the dial, when worn, creates subtle changes to its deep blue colour. As for the new polished Moon, it stands out even more distinctly against the star-studded sky, as do the engraved date numerals around it. Applied hour markers, designed especially for this 100-piece limited edition, contribute the final touch to the overall harmony.