perchè i numeri interni sono specchiati?
Credo che sia una foto "speculare" dell'originale.
Non credo, la corona di carica, è come giustamente deve essere nella posizione canonica della polsatura a sinistra, le sigle sono "dritte", come pure le altre scale numeriche presenti, però è una bella domanda da porsi, c'è nessuno che saprebbe spiegare la stranezza?
Vero, infatti nel link postato da Fabri c'è la descrizione (in Inglese) dell'orologio e della sua storia:
An extremely rare, important deck watch for the Waffen-SS "Messbatterie" - ordered by the SS-Führungshauptamt IX in Berlin and sent to the SS-artillery school in Glau near Berlin- purpose-built watch with seconds' device in mirror writing and flying fifths of a seconds indication with original oversized leather strap and Lange extract from the archivesCase: metal, matted grey, push back. Dial: matted black, luminous Arabic/Roman numerals, centre seconds, outer minute scale 5-55, inner hour scale in mirror writing 5-55, fifths of a seconds' indication, extended devices at 15 and 45, luminous blued steel lance hands. Movm.: 2/3 plate movement, frosted, gilt, polished screws, indirect centre seconds, nickel steel compensation balance, blued Breguet balance spring, index spring fine adjusting device, sapphire endstone on balance.
Navigation watch of the Waffen-SS (M-B) - Deck watch for the SS "Messbatterie"In 1940 the Waffen-SS ordered the company Lange & Soehne to develop a deck watch for the "Messbatterie", based on the Luftwaffe watch B but with a larger diameter. For photographic purposes the seconds numerals were to be added in mirror writing too. After some silver-cased prototypes, ten watches per month were to be delivered starting in March 1941. According to the document at hand Lange & Soehne produced 22 of these watches in nickel-plated cases and with a diameter of 65 mm in 1943.
This B-watch special design was sent together with the others to the SS-Fuehrungshauptamt in Berlin on October 22, 1943.