Beautiful piece of horology here with A. Lange’s Grand Lange 1 “Lumen”, featuring a killer sapphire dial with a semi-transparent coating. This watch, while not being anything incredibly new, is a great host of features and has all the great stuff that A. Lange is known for all in one platinum-cased timepiece.

GRAND LANGE 1 “Lumen” Ref. 117.035
Movement: Lange manufacture calibre L095.2, manually wound, crafted to the most exacting Lange quality standards, decorated and assembled by hand; precision-adjusted in five positions; plates and bridges made of untreated German silver; balance cock engraved by hand
Movement parts: 400
Jewels: 42
Screwed gold chatons: 7
Escapement: Lever escapement
Oscillator: Shock-resistant screw balance; superior-quality balance spring manufactured in-house, frequency 21,600 semi-oscillations per hour, precision beat adjustment system with lateral setscrew and whiplash spring
Power reserve: 72 hours when fully wound
Functions: Time indicated in hours, minutes, and subsidiary seconds with stop seconds; power-reserve indicator; outsize date
Operating elements: Crown for winding the watch and setting the time; push piece for rapid correction of the outsize date
Case dimensions: Diameter: 40.9 millimetres; height: 9.8 millimetres
Movement: dimensions Diameter: 34.1 millimetres; height: 4.7 millimetres
Crystal and back Sapphire crystal (hardness 9)
Case: Platinum
Dial: Basic dial (outer ring, hour, minutes, small seconds) of solid silver (black), recessed parts of sapphire crystal with semitransparent coating; luminous outsize date and indications for hours and power-reserve
Hands: Rhodiumed gold; hours, minutes, power-reserve indicator luminous
Strap: Hand-stitched crocodile strap, black
Buckle: Lange prong buckle in platinum