Longines - Flagship HF - Sans prix de réserve - 84181 - Homme - 1970

Offered in this auction by Second Vintage The Longines Flagship HF represents a fascinating era in horological history, a period when Swiss manufacturers were pushing the boundaries of mechanical precision through high-frequency escapements. Standing for "High Frequency," the HF line utilized Longines' impressive Caliber 431, a movement beating at 36,000 vibrations per hour to achieve chronometer-level stability. Encased in a quintessential late-century cushion profile, this timepiece seamlessly blends technical achievement with the refined, elegant aesthetic that has defined the Longines Flagship collection since its inception. Brand: Longines Model: Flagship HF Reference Number: 84181 Serial Number: 50674632 Movement: Automatic, Caliber 431, 17 Jewels Dial: Silver vertical-brushed dial with applied indices, showing visible spotting and edge wear along the lower periphery Case Size: 34 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1970 Condition: Good vintage condition with honest wear and distinct age-consistent dial patina Dial and Hands The watch features a striking silver dial characterized by a refined vertical brushed finish that plays beautifully with the light. It is adorned with applied faceted baton hour markers featuring black central inserts, which are perfectly complemented by the matching steel stick hands. The dial proudly displays the applied Longines winged hourglass logo beneath the 12 o'clock position, alongside elegant typography denoting the "Automatic" and "Flagship HF" designations. A subtle date window is positioned between 4 and 5 o'clock, maintaining the dial's balanced symmetry. Upon close inspection, the dial exhibits clear signs of honest vintage aging, most notably visible edge wear, spotting, and discoloration along the outer minute track, particularly concentrated around the lower half between the 6 and 9 o'clock positions. The hands and applied furniture remain well-preserved, maintaining their sharp facets and legibility. Case and Crystal The 34mm stainless steel case features a distinctive cushion or tonneau-shaped profile that perfectly captures the architectural design language of its era. The case boasts smooth, polished flanks and a polished bezel that frame the dial elegantly, while the hooded lug design provides a seamless transition to the bracelet. The prominent crown is correctly signed with the Longines name and winged hourglass logo. The watch is fitted with a domed crystal that protects the dial and presents clearly, with only minor superficial handling marks consistent with age. Turning the watch over reveals a brushed stainless steel caseback bearing the engraved serial number 15802734, while the inner caseback is properly stamped with the Longines maker's marks and the reference number 8418 1. The case remains in good vintage condition, showing normal, honest surface wear and light scratches commensurate with decades of careful use, without any major structural damage. Movement Powering this timepiece is the impressive Longines Caliber 431, a 17-jewel automatic movement renowned for its high-frequency 36,000 vibrations per hour (10 Hz) escapement. This rapid beat rate was designed to provide superior timekeeping stability and accuracy. The movement is visually clean and beautifully finished, featuring a signed Longines rotor and crisp gilt engravings displaying the caliber number and the movement serial number 50674632. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. The timegrapher results indicate +5 to +7 seconds per day with strong amplitude. Strap The watch is paired with a period-correct stainless steel mesh bracelet that complements the vintage aesthetic of the cushion case. The bracelet is highly flexible, offering a comfortable fit on the wrist, and secures with an adjustable folding clasp. It accommodates a wrist size of up to 19cm. Condition This Longines is presented in good vintage condition. It is a highly original example that wears its history openly. The case retains its attractive shape with moderate, age-appropriate surface scratches. The dial's vertical brushing remains distinct, though it displays undeniable vintage character through localized spotting and edge wear, primarily along the lower perimeter. The mechanical health of the high-frequency movement remains a strong highlight of this lot. Dimensions The stainless steel case measures exactly 34 mm in diameter, excluding the signed Longines crown. The integrated style of the case and the adjustable mesh bracelet will comfortably accommodate a wrist circumference of up to 19 cm. Remarks For collectors of significant vintage movements, the Longines Caliber 431 is a highly respected mechanism that represents the peak of mechanical development just prior to the quartz crisis. This Flagship HF combines that technical pedigree with a wonderfully wearable cushion case, making it an excellent daily vintage companion that offers genuine horological substance. History Introduced in 1957, the Flagship collection quickly became one of Longines' most successful and prestigious lines, known for its elegant proportions and reliable calibers. By the late 1960s, the watch industry was engaged in a fierce race to produce high-frequency movements capable of unprecedented accuracy. Longines answered this challenge with the Caliber 431, beating at 36,000 vph. The Flagship HF models were born from this innovation, offering clients a sophisticated dress watch that secretly housed a high-performance, chronometer-capable engine. Today, these high-frequency Longines models are celebrated by enthusiasts for their smooth sweeping seconds hands and their role in the golden age of competitive mechanical timekeeping. / Second Vintage SKU: LON-LFH-0001