商品説明
This is a Citizen Super Ace from 1963.
The Citizen Super Ace was a high-grade model that inherited the design philosophy of the best-selling "Deluxe" of its time, while aiming for even higher precision and more jewels (23 jewels).
■ Rare specifications with a large 38mm case
A major appeal of this model is its unusually large 38mm diameter case for an antique watch. Larger than the mainstream of the time (33-35mm) and featuring thick, powerful lugs, this design exudes an overwhelming presence that remains timeless even with modern attire.
■ The "80 Micron" engraving that evokes the era
The case back clearly retains the engraving "14K GOLD FILLED 80 MICRONS." This specification boasts a thickness approximately four times that of typical gold plating at the time (around 20 microns).
During the transitional period when Japanese watches were moving towards luxury, such specific thickness values proudly engraved can be said to be a "testament to an era where no expense was spared in craftsmanship" before subsequent simplifications. Even after more than half a century, the condition, with almost no base metal exposed on the corners of the lugs, eloquently speaks to its high quality.
■ Special movement and the pride of three stars
Inside, it is equipped with a 23-jewel movement featuring beautiful red gold plating. The movement bears the engraving "SPECIALLY ADJUSTED," indicating that it has been meticulously adjusted in five positions, and the dial features the three-star mark, a symbol of high precision.
Among Super Ace models, which had a short production period of about one year, this particular piece, with such lavish specifications both externally and internally, also holds high historical value.
■ Refined details
The radial finish dial, which changes its expression depending on the angle of light, is graced with an elegant cursive "Citizen Super Ace" logo. The combination of bold, multi-faceted bar indexes and dolphin hands creates a classic yet modern strength. This is a recommended item for those seeking a special watch that combines dressiness with a refined presence.
Condition
This watch has been overhauled.
The leather strap has been replaced with a new CASSIS brand one, so you can use it comfortably.
The crystal has no noticeable scratches, and time visibility is good.
The dial has age-related discoloration (aging) and small stains.
As this is a watch from an older era, it is not waterproof. Do not use it in humid environments (e.g., on rainy days, when washing your face, or on hot days when you sweat).
Please be careful of dropping it, strong impacts, or magnetism (from smartphones, PCs, etc.) as it is a precision instrument.How to operate
How to pull out the crown: Press your fingernail between the case and the crown and move it like a lever.
Pulling the crown too hard may cause it to come off. Please pull it out gently.
To prevent the crown from bending, remove the watch from your wrist before operating it.
Gentle operation can reduce stress on the crown.
Manual winding: Turn the crown upwards in its normal position.
Setting the time: Pull the crown and turn it downwards.
The second hand does not stop
| Year of Manufacture | August 1963 |
|---|---|
| Model Number | A51507081 |
| Movement | Manual winding 23 jewels |
| Material | 14K Gold Filled case (80 MICRONS) Plastic crystal |
| Size | Diameter: 38mm (excluding crown) Thickness: 9mm |
| Bracelet | New CASSIS leather strap 18mm (cowhide/brown) Lug width: 18.5mm |
| Overhaul Date | December 2025 |
| Condition |
Not water resistant 【Case】Minor scuffs and scratches【Case Back】Minor scuffs and scratches 【Crystal】No noticeable scratches 【Dial】Age-related discoloration, small stains 【Hands】Dullness |
| Accessories | No accessories Comes with our 100-day warranty |



