German pink gold quality 1A lever pocket watch Circa 1905

Gold open faced watch
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A heavy and large pink gold A. Lange & Söhne pocket watch with the rare calibre 45, quality 1A  with extract from the archives, circa 1905. An 18K pink gold, very rare special case with integrated hinges, case and movement with matching number 45259, A. Lange & Söhne precision lever movement in best quality, rare calibre 45, screwed gold chatons, fine adjusting device, gold lever, gold escape wheel, diamond endstone, original enamel dial (fine hairlines), original pink gold hands, in working order, in very beautiful condition, comes with an old sales box, signed Krall, Elberfeld.
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Diameter: 53 mm
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Weight: 108 g
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Signed:  A. Lange & Söhne  Glashütte Dresden