Citizen Leopard Super Beat 10 – Ref. 4-720369Y (March 1970)

28 Jewels | High Beat 36,000 A/h | Automatic | Stainless Steel | Rare Collector's Model

The Citizen Leopard Super Beat 10 is one of the most fascinating chapters in Japanese watchmaking history – developed at the height of the technological competition between Citizen and Seiko in the late 1960s.

While Seiko set standards with the Grand Seiko 61GS Hi-Beat and the King Seiko 45KS , Citizen responded with the Leopard series , a technically advanced line of sporty-elegant automatic watches.
The goal: highest precision in mechanical movements, paired with avant-garde design.

Within this series, the Super Beat 10 model represents the top segment – ​​with a movement that operates at 36,000 semi-oscillations per hour and was in no way inferior to Seiko's Hi-Beat calibers in terms of smoothness and accuracy.

Technical features

• Model: Citizen Leopard Super Beat 10
• Reference: 4-720369Y
• Caliber: Citizen 7203 (automatic, high beat 36,000 A/h)
• Stones: 28 Jewels
• Drive: Automatic with stop-seconds function
• Functions: Hour, minute, second, day of the week, date
• Housing: Stainless steel
• Dial: Dark grey with applied logo and orange accents
• Hands: Silver-colored with orange second hand
• Glass: Acrylic glass with date magnifying glass
• Case back: Engraved “CITIZEN 4-720369Y PARA WATER STAINLESS STEEL AUTOMATIC 003xxxxx”
• Dimensions:
  • Diameter: approx. 35 x 39.4 mm
  • Height: approx. 11 mm
  • Lug width: 18 mm
  • Lug-to-lug: 39.4 mm
• Bracelet: Original Citizen stainless steel bracelet with folding clasp
• Weight: approx. 84 g (including strap)

Condition

• Very nice original condition , no subsequent modifications.
• Dial and hands in good condition, with only slight signs of age.
• Case with fine signs of wear, authentic patina.
• Glass with scratches.
• The machine runs reliably and stably.
• The bracelet is original and complete, in good condition.

Special features

• High-frequency 36,000 A/h automatic movement – ​​one of the most precise mechanical movements of its time
• “Para Water” – early Citizen water protection technology (introduced in 1959)
• Rare model with distinctive 1970s cushion case
• Independent, technology-oriented design with a sporty character
• Significantly rarer than Seiko's Hi-Beat models, with increasing value.

Dating

Serial number 003xxxxx → Production month March 1970 .

Historical background

The Citizen Leopard series was conceived from 1969 onwards as a direct competitor to Seiko's high-end mechanical lines (King Seiko / Grand Seiko).
While Seiko focused primarily on precision in the chronometer sector, Citizen combined sportier case shapes with high-beat technology and avant-garde dial designs in the Leopard.

The name “Super Beat 10” refers to the frequency of the clockwork (10 oscillations per second = 36,000 A/h).
The Leopard series was produced until about 1973, before Citizen shifted its focus to the revolutionary Chronomaster and later the Quartz Crystal lines.
Today, the Leopard models are considered key models of Japanese watchmaking, bridging classic mechanics and technological modernity – especially rare in good original condition.

Warranty (used)

This is a used item. The limitation period for claims based on defects (statutory warranty) is 12 months from delivery.

Notice

Since this is a used watch, water resistance cannot be guaranteed.
To protect the clock mechanism, the clock should not come into contact with water or moisture.