Answer First
An Air Command 6665 replica is a copy of Blancpain's Air Command chronograph, a flyback chronograph with military aviation roots. A good replica gets four things right: the case proportions and lug shape, the two-register dial layout with correct subdial spacing, the countdown bezel action, and a chronograph that starts, stops, and resets cleanly with one pusher press. Everything else (engraving depth, lume color, strap hardware) is secondary. Inspect in that order and you will separate a 1:1 build from a display piece within ten minutes.
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What the Reference Actually Is
The original Air Command was a 1950s Blancpain chronograph built in very small numbers, which is why surviving examples draw serious auction attention and why replica demand exists at all. Modern reissues revived the name with a flyback chronograph movement, a rotating countdown bezel, and a dial built for legibility in a cockpit. Any replica worth owning has to reproduce that tool-watch character, not just the logo.
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Before You Inspect
- Reference photography of the exact variant you are matching, front, caseback, and profile
- A caliper or ruler with millimeter markings
- A loupe (10x is enough)
- A soft cloth and a stable, well-lit surface
- The seller's stated spec sheet for case size, movement, and water resistance
Inspection Procedure
- Measure the case diameter across the bezel at the 9 to 3 line and compare it to the spec sheet.
- Measure case thickness with the caliper across the caseback and crystal, then compare to the reference figure.
- Run a fingertip along both flanks of the case and each lug to feel for sharp edges or machine marks.
- Check lug width at the spring bar, then confirm the strap sits flush against the case with no gaps.
- Examine the dial under the loupe: print edges, subdial concentric rings, and marker alignment at 12.
- Press the top pusher to start the chronograph, press it again to stop, and press the lower pusher to reset.
- Repeat the start, stop, and reset cycle five times and watch that each hand returns to zero without drift.
- Rotate the bezel through a full turn, then check for backplay and whether the triangle indexes exactly at 12.
- Wind the crown through twenty turns and note any grit, then pull to the setting position and check hand alignment.
- Set the watch face down and listen for rotor noise, then repeat face up.
Spec Checklist
- Case diameter and thickness within a few tenths of a millimeter of the stated reference
- Subdial positions matching the original at the 3 and 9 axis, with correct hand lengths
- Bezel insert printing crisp under magnification, with no bleeding at the numerals
- Sapphire crystal with even anti-reflective coating on the underside
- Signed crown with clean relief, not a stamped disc
- Caseback engraving depth consistent and centered on the caseback axis
- Serial and reference text in the correct font weight
Red Flags
- Chronograph seconds hand that stops short of 12 on reset
- Subdial hands that jump or stutter when the pusher is released
- Bezel that clicks unevenly or rotates past its stop
- Crown that feels loose in the stem or wobbles when fully wound
- Dial lume that is bright white under daylight, when it should read slightly warm
Water Resistance and Servicing
Treat any stated water resistance on a replica as unverified until it is pressure tested. ISO 22810 sets the standard test method for water resistance ratings, and a watchmaker with a dry tester can confirm or deny the claim in minutes. Have the caseback gasket inspected at the same time. For the movement, ask for a timing reading on a timegrapher and accept nothing with a rate outside plus or minus fifteen seconds per day in the dial-up position.
Final Call
If the case measures true, the chronograph resets to zero five times out of five, and the bezel indexes exactly, the build is sound. If any one of those fails, walk away. Fit and finish can be forgiven at this price point. A chronograph that will not reset cannot.