Longines Automatic 1570-633 (1977)

Now available at auction from Second Vintage This Longines Automatic is a remarkable example of late 1970s elegance, combining a robust mechanical architecture with a refined dress watch aesthetic. Ideally sized at 36mm, this timepiece features a stunning vertically brushed gold-tone dial that plays beautifully with the light, offering a sophisticated presence on the wrist. Powered by the highly regarded Caliber L633.1, this watch represents the golden era of Swiss mechanical watchmaking before the quartz crisis fully took hold, making it a desirable piece for collectors who value both style and horological substance. Brand: Longines Model: Automatic Reference Number: 1570-633 Serial Number: 53644972 Movement: Automatic Caliber L633.1 Dial: Vertical brushed gold-tone Case Size: 36 mm Case Material: Gold-plated with stainless steel caseback Production Year: 1977 Condition: Excellent vintage condition with a pristine dial and sharp case lines, accompanied by timegrapher results indicating reliable performance. Dial and Hands The dial is the standout feature of this timepiece, presenting a flawless vertical brushed gold-tone finish that remains in stunning condition. It features applied baton indices with black inlays that provide excellent contrast and legibility. The matching gold-tone stick hands are equally well-preserved. A framed date window is positioned at 3 o'clock, and the dial is signed with the applied Longines winged hourglass logo. The text remains crisp and sharp, showcasing the high-quality printing characteristic of Longines. Case and Crystal The 36mm case offers a contemporary fit that wears larger than many vintage dress watches of the era. The gold plating is rich and well-preserved, showing only minor handling marks consistent with careful usage. The lugs remain thick with defined edges. The case is fitted with a stainless steel screw-down caseback which ensures better moisture protection. There is some age-related surface pitting visible on the outer rim of the stainless steel caseback, which is common for watches of this age but does not affect the structural integrity or the view from the wrist. The acrylic crystal is clear and free from distracting scratches. Movement Powering the watch is the dependable Longines Caliber L633.1, a 25-jewel automatic movement known for its durability and precision. The movement presents very cleanly with the rotor spinning freely. Timegrapher testing shows the watch running at approximately -10 to -12 seconds per day with strong amplitude, which indicates healthy movement function and running within vintage tolerances. Strap The watch is fitted with a new brown leather strap featuring an alligator grain pattern and contrasting stitching. The strap complements the gold tones of the case perfectly and is ready for immediate wear. Condition This timepiece is in excellent vintage condition. The dial is exceptionally clean, which is the most critical aspect for value in vintage dress watches. The case retains its original geometry and finish quality. While the caseback shows signs of age on the exterior rim, the overall presentation is that of a cherished and well-maintained timepiece. Dimensions With a diameter of 36mm excluding the crown, the watch offers a classic yet modern stance on the wrist. The lug design allows it to sit comfortably under a shirt cuff while maintaining enough presence for casual wear. Remarks This Reference 1570 is a testament to Longines' ability to produce timeless dress watches. The combination of the L633 movement—a workhorse based on ETA architecture—and the vertically brushed dial makes this a practical daily wearer that does not compromise on vintage charm. It is a versatile piece that bridges the gap between formal dress watch and everyday companion. History Longines has been a pillar of the Swiss watch industry since 1832, known for their winged hourglass logo which is the oldest registered trademark for a watchmaker. By the late 1970s, when this watch was produced, Longines was focusing on high-precision automatics that could compete with the emerging electronic market. The L633 caliber inside this watch belongs to a family of movements that helped sustain the brand's reputation for mechanical reliability during a transitional decade in horology. / Second Vintage SKU: LON-LAX-0012