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subeEach case requires a week of work on the part of a single engraver, a work made particularly demanding by the hardness of the AISI 316L steel of which the case is made. The geometric and floral motifs are first delineated with chalk or magnesium powder and they are then engraved with the burin. The engraved surfaces consist of very narrow parallel lines which give depth to the design, accentuating the contrast between light and dark. Since the engraver only works on the case when it is already perfectly finished, any error he may make will irrevocably damage the work already carried out.
On the black dial, enhanced by a lily and a satiné soleil finish which catches and diffuses the light creating surprising and fascinating effects, the name "Firenze" is engraved, Florence being the city where Panerai was founded and the inspiration for this model. As in many of Panerai's creations, the luminosity of the dial is enhanced by its sandwich structure: the luminous substance which makes it legible at night shines through holes corresponding to the hour markers in the upper of the two superimposed discs which form the dial.
The sapphire porthole in the back of the new Radiomir Firenze 3 Days Acciaio makes it possible to admire the hand-wound P.3000/F calibre, entirely executed in the Panerai Manufacture at Neuchâtel. Accurate, solid and reliable, the P.3000/F has two spring barrels which store a power reserve of three days. The wheelwork of the movement is protected by four brushed bridges all finely engraved one of which, with two supports, fixes the large balance wheel (13.2 mm in diameter) which oscillates at a frequency 3 Hz (21,600 vibrations per hour).
The P.3000 calibre also incorporates the useful device which enables the hour hand to be adjusted quickly and accurately forwards or backwards, without interfering with ghe movement of the minute hand.
