Subdelta Blue ace
  • Subdelta Blue ace
  • Subdelta Blue Ace Buckle
  • Subdelta Blue Ace Strap and Buckle
  • Subdelta Blue Ace Sandwich Dial Pilotwatch
  • Subdelta Blue Ace
  • Subdelta Blue Ace Crown and dial
  • Subdelta Blue Ace Lumeshot
  • Subdelta Blue Ace warrantycard
  • Subdelta Blue Ace on a high quality Nato strap
  • Modified movement of the Subdelta Pilot one

Subdelta Blue Ace Pilot-watch

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The SUBDELTA Blue Ace is a Stainless Steel pilot's watch with dark blue dial and a highly decorated and modified Unitas Handwound Movement.


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Subdelta Blue Ace

The SUBDELTA Blue Ace is a logical evolution of the 2017 Ace, a grade 5 titanium-blasted pilot's watch with black dial. This time we opted for a stainless steel version with a rich blue dial. The length of the case has been reduced to 2mm compared to the Ace, making it even more portable. For visual reasons, we have this blue ace nevertheless equipped with a titanium crown class 5. You can choose between a beaded or a polished crown.

Subdelta Blue Ace Lumeshot

It has a "Destro" crown setup. This means that the crown is on the left side of the clock. In the '40s, this is custom with custom aviator watches to prevent overdeveloped crowns from drilling into a pilot's wrist in combat situations. This may be dangerous and may lead to failure. The Blue Ace follows wartime design but is not too big. The Swiss hands and the dial are generously filled with Swiss Super-LumiNova BGW9 for maximum readability under all circumstances.

Subdelta Blue ace Toolwatch

The chosen movement is an time correct Swiss Unitas (ETA) 6497, heavily modified by a small, specialized Swiss factory. Due to a long waiting list, it was ordered many months in advance. Apart from the central change in hacking seconds, we opted for the "full option" version with unparalleled decorations and finishes. We even stretched it by manually engraving the hour wheel with a ace of spades. That's where the name of the watch comes from.

Movement view of the Subdelta Blue Ace

The SUBDELTA Blue Ace is housed in a sturdy Canadian Nanuk 903 flight case with a purpose-built foam interior. SUBDELTA buckle, a premium gray NATO wristband, a credit card guarantee and a few top secret extras.

Subdelta Blue Ace timepiece


Case: surgical stainless steel 316L

Diameter without crown: 42mm

Diameter with crown: 48mm

Diameter crystal: 38.2 mm

Thickness : 12.8 mm

Lug-to-Lug : 52 mm

Lug width: 22mm

Finish: radial and linear brushing on larger surfaces and hand-polished chamfers

Engravings: Ace of spades between the lower eyelets, handmade by Sanders Engraver from the Netherlands

Crystal: 2mm thick, double domed, bevelled crystal with violet anti-reflective coating on the inside

Water resistance: 6 ATM or 60 m or 200 ft

 Drilled lug holes for easy strapchange

Caseback: Screw-in 316L INOX Steel

Finish: radial brushing

Engraving: Basic clock and motion data, created by Sanders Engraver by hand

Case-back Crystal: 1.4 mm thick, flat sapphire crystal 

Buckle: Signed 316L INOX Steel

End: linear brushing on larger areas and hand polishing slopes

Engravings:Lasered Brandname

Crown: Titanium Class 5 (Ti5)

Type: pull out

Material: Titanium Class 5 (Ti5)

Diameter: 9.8 mm

Engraving: Unique manufacturing number, handmade by Sanders Engraver


Type: manual wind

Brand: modified UNITAS 6497 (ETA) Switzerland

Adjustments made:: Central, hacking seconds, jewel upgrade, Swan-neck Fine-adjustment

Diameter: 16.5 "(16.5 lines) or 36.6 mm

Jewels: 18 (Default: 17)

Frequency: 18,000 / h or 5 ticks per second (sweep second)

Power reserve: approx. 50 hours (standard ETA 6497: approx. 45 hours)

Decorations: Côtes-de-Genève linear brushes on the plates, flame-blued screws, pegs and engraved ace of Sanders Engraver on the hour wheel

Remarks: screwed Glycidur balance, gooseneck fine adjustment, beautiful bridge construction. The movement will be manually adjusted by our watchmaker prior to shipping and will be printed with timeline and water resistance values.

Construction: sandwich (bottom dial has cavities filled with luminous color, upper dial has been lasered)

Color: matt black, painted

Luminous Color: Swiss Super-LumiNova BGW9 "Grade A" (blue at night)


Construction: sword style

Color: matt black

Luminous Color: Swiss Super-LumiNova BGW9 "Grade A" (blue at night)


Brand: the Netherlands

Material: Italian leather, handmade

Color: beige with cream stitching

Thickness: 3 mm

Design: unique for this watch

Specific References

Subdelta Blue Ace Pilot-watch

Subdelta Blue Ace Pilot-watch