Watch Overview

The Junghans Aerious Gold Chronoscope USA Edition Pilot’s Chronograph wristwatch, reference 27/9305.100, is a striking expression of German precision and strength of character. One of only 35 pieces ever produced, this exceptional timepiece stands as a tribute to the brand’s enduring pursuit of accuracy and excellence. Designed for aviators and collectors who value both engineering mastery and refined functionality, this limited-edition model embodies the pinnacle of Junghans craftsmanship.

Powered by the self-winding calibre J890, an exceptional chronograph movement featuring a column wheel system, 41 jewels, small seconds, date display, power reserve indicator up to 48 hours, and a frequency of 28,800 vph (4 Hz), the Aerious Pilot delivers technical performance that meets professional standards.

The multi-part dial combines a carbon fiber layer with applied hour markers, the historical Junghans logo, and luminous accents. It presents small seconds at 11 o’clock, a power reserve and date display at 4 o’clock, and chronograph functions including a central seconds hand, 30-minute counter at 1 o’clock, and 12-hour counter at 7 o’clock. Each indication is purposefully arranged for perfect balance and legibility, underscoring the watch’s precision-focused design.

The substantial 46.6 mm round case, crafted from solid 18-carat gold, features a screw-down crown with protective shoulders, well-proportioned pushers, a display case back, and a domed sapphire crystal with anti-reflective coating on both sides. Water-resistant to 10 bar (100 meters / 330 feet), it is engineered for durability and reliability.

Every detail — from the Côtes de Genève finishing and blued screws on the movement to the 18K gold folding clasp paired with an alligator leather strap — reflects Junghans’ legacy of sophistication, design integrity, and timeless value. A rare mechanical treasure for true connoisseurs of fine horology.

Product Details

General Specifications

Brand: Junghans
Type: Wristwatch
Model: Aerious Gold Chronoscope USA Edition
Reference: 27/9305.100
Year / Era: Modern
Gender: Men's
Country of Manufacture: Germany

Movement

Type: Self-winding
Caliber: J890
Jewels: 41
Some Functions:
- Hours, minutes, small seconds
- Power reserve indicator
- Date calendar with quick-set
- Central chronograph seconds
- 30-minute counter
- 12-hour counter
- Column-wheel system
Power Reserve: Up to 48-hours
Frequency: 28,800vph (4 Hz)

Case & Band

Material: 18K yellow gold
Case Shape: Round
Bezel: Smooth
Crown: Screw-down with crown guards at 4.30 o'clock
Crystal: Domed sapphire with anti-reflective coating on both sides
Back: Exhibition
Water Resistance: Up to 10 bar (100 meters / 300 feet / 10 ATM)
Band: Alligator leather strap with 18K gold folding clasp
Case Back Markings: Junghans Aerious 27/9305.100 Sapphire 750/18K 10 BAR

Case Measurements (mm)

Case Size: 46.6
Case Diameter w/Crown: 53.6
Case Lug to Lug: 52.2
Case Thickness: 14.8
Lug Width: 23
Band Width: 23

Additional Info

Box & Papers: YES - Original double box and papers
Condition: The watch is in pristine condition. The case, dial, and strap remain in outstanding condition. All original
Extras: This timepiece has been fully inspected and authenticated by our in-house watchmaker, confirming that it runs accurately. It is ready to wear and enjoy.

History & Legacy of Junghans

Founded in 1861, Junghans has long been a symbol of precision and aesthetic balance in German watchmaking. The Aerious Pilot’s Chronograph continues this tradition — merging advanced engineering with timeless design and meticulous attention to detail.

This model embodies the philosophy of Junghans: a harmony of technical excellence and understated elegance, offering collectors not just a watch, but a legacy of innovation and artistry.

About Second Hand Horology

At SECOND HAND HOROLOGY, we offer a curated selection of watches ranging from vintage to modern, including both brand-new and pre-owned timepieces. We’re committed to quality, accuracy, and integrity. Our listings feature:

Professional, unedited photography and clear, transparent descriptions. Every watch is thoroughly inspected and securely packaged to ensure a confident, seamless buying experience.

We also warmly invite you to visit our physical shop and explore the collection in person.

Contact Us

We appreciate you checking out our listing! Don’t hesitate to reach out with questions, offers, or just to talk watches — we love what we do and enjoy connecting with fellow enthusiasts.

Thank you for your business—we truly appreciate your support and look forward to serving you again in the future!

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Junghans Aerious Gold Chronoscope USA Edition Pilot’s Chronograph – 18K Gold – Ref. 27/9305.100