SIHH 2015: Panerai PAM 603 Mare Nostrum Titanio

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The chronograph made by Officine Panerai in 1943 for the deck officer of the Royal Italian Navy is revived again, this time in Titanio (Italian for Titanium).

Mare Nostrum translates to “Our Sea”.  The Panerai family had this name in mind when in 1943 it named the chronograph created for the deck officers of the Royal Italian Navy “Mare Nostrum”

The case is 52mm in size.  The metal used for this tonneau-shaped case is not steel but brushed titanium, a material which combines excellent non-allergenic properties and greater lightness than steel with the structural toughness needed to resist high pressure, external stresses and corrosion. The wide flat bezel, the screw back and the winding crown engraved with the words “Mare Nostrum” are all made of brushed titanium as well.

PAM00603_Front (Resized)

The PAM 603: Mare Nostrum

The chronograph functions are controlled by two classic push buttons, also made of brushed titanium, and the readings are indicated by the central seconds hand and by a subsidiary minutes counter dial at three o’clock. The continuous seconds hand rotates in a subsidiary dial at nine o’clock. Protected by a sapphire crystal with anti-reflective treatment, the dial is made in two levels and, instead of the dark green of the vintage model, it is a sophisticated tobacco brown, which coordinates with the brown leather strap and its ecru stitching.


Textures: The knurled bezel and the brushed titanium case

The new version of the Mare Nostrum has a hand-wound movement: the OP XXV calibre developed on a Minerva 13-22 base; it is 12¾ lignes in diameter and has a balance wheel making 18,000 vibrations per hour, like the Angelus movement of the vintage prototype. This is a high quality watchmaking calibre, hand-finished, with top-of-the-range technical details such as the column wheel and the swan neck regulator. The bridges are made of Maillechort, a nickel silver alloy that is particularly hard to work, and they have a sophisticated Côtes de Genève finish.  Unlike the previous limited edition Mare Nostrum, the new Titanio has a solid titanium caseback.


No peeking: The solid titanium caseback

The Mare Nostrum Titanio – 52mm has the reference PAM00603 and it is water-resistant to 3 bars (a depth ofabout 30 metres).

It is a limited edition of 150 pieces.

Specifications from Press Release


  • Hand-wound mechanical, exclusive Panerai OP XXV calibre.
  • FUNCTIONS: Hours, minutes, seconds,chronograph with two counters.
  • POWER RESERVE: 55 Hours.


  • : 52 mm, brushed titanium. DIAL: Brown on two levels with luminous Arabic
    numerals and hour markers. Minute counter at 3 o’clock, seconds at 9 o’clock, central chronograph hand.
  • WATER-RESISTANCE: 3 bar (~ 30 metres).

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