Longines "10k GOLD-FILLED" 520361 (1958)

Presented for auction by Second Vintage A superb example of classic mid-century Longines, this rare and beautifully preserved watch perfectly captures the refined elegance and quality that has defined the brand for generations. Featuring a seldom-seen textured silver dial and powered by the respected Longines Caliber 23Z manual movement, this piece stands out for its originality, understated sophistication, and unique historic provenance. Careful attention to detail and near-mint presentation make this a remarkable addition to any vintage collection. Brand: Longines Reference Number: 520361 Serial Number: 10819038 Movement: Longines Caliber 23Z manual wind Dial: Silver textured dial with applied baton indices and dauphine hands Case Size: 33 mm (excluding the crown) Case Material: 10k gold filled Production Year: 1958 Condition: Outstanding vintage condition with a crisp dial, well-defined case, minimal wear, and a sharp, beautifully engraved caseback. Timegrapher result: -15s to -19s/day, indicating a healthy movement running within vintage tolerances. Dial and Hands The dial immediately impresses with its intricate textured finish, adding a subtle brilliance and unique visual depth. Applied baton indices and dauphine hands remain in excellent original condition, while a soft, even patina infuses the dial with genuine vintage character. Case and Crystal The 33mm case, in 10k gold filled, features bold lugs and well-preserved lines, attesting to careful ownership through the decades. The acrylic crystal is clear and bright, offering pristine visibility of the dial beneath. The caseback engraving is crisp and utterly authentic. Movement Inside ticks the renowned Longines Caliber 23Z, delivering reliable vintage performance. Timegrapher readings show a consistent rate of -15 to -19 seconds per day, highlighting the healthy operation of this well-built movement. Strap A supple dark brown leather strap completes the watch, thoughtfully chosen to enhance both the gold case and vintage styling, and ready for immediate, comfortable wear. Condition This example is in exceptional near-mint condition: sharp case lines, superb textured dial, original hands and indices, and a beautifully preserved historic engraving on the caseback. The movement performs reliably within vintage tolerances, as evidenced by timegrapher results. Dimensions Case diameter: 33mm (excluding the crown) Remarks The caseback is expertly engraved: “To Carl Johnson, Service Award, 1933-1958, M.Klein & Sons.” This personal dedication marks 25 years of distinguished service, connecting this Longines to a real story of loyalty and achievement. The engraving offers a direct link to America’s postwar industrial history, imbuing the watch with character and provenance sought after by discerning collectors. Owning this Longines means wearing not just an exquisite timepiece, but a tangible piece of human history. History Longines has epitomized elegance, technical excellence, and reliability throughout the 20th century, and the manual Caliber 23Z is a shining example of the brand’s celebrated craftsmanship. The engraved caseback honors decades of service to M.Klein & Sons, reflecting the respect and values of a past era. This storied and stunning Longines is a rare find for any collector passionate about vintage watches with authentic heritage. / Second Vintage SKU: LON-LXX-0001