GrailAtlasAn independent mechanical watch reference
العربية
Mass-produced#1 in family

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Movement tier: unclassified · caliber Frederique Constant Cal. FC-303: in-house automatic, 28,800bph, 38h PR, 26j; used in Runabout and Index Auto; accessible FC manufacture caliber · 38h power reserve · see-through caseback
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
42 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.

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Authentication

Verify the Cal. FC-303 in-house architecture through the exhibition caseback; boat steering wheel seconds hand is the dial signature.

Known issues in the market
  • The FC-303 caseback view distinguishes it from ETA-based FC references at similar price points.
  • The nautical dial motifs are original design elements; any stripped or refinished dial removes the boat steering wheel seconds hand detail.
AreaWhat to checkWhat is correctRed flag
casebackFC-303 in-house architectureFC-303 in-house movement visible through exhibition caseback; distinct FC bridge layoutETA or Sellita architecture; non-genuine movement
dialBoat steering wheel seconds handBoat steering wheel motif on the seconds hand; correct nautical dial designStandard seconds hand without the steering wheel motif; wrong or replacement dial
caseRunabout case finishCorrect case finish and proportions for the 42mm Runabout referenceCase finish inconsistency or incorrect proportions
Common legitimate replacements
  • Leather or rubber strap; FC OEM.
  • Crystal; sapphire standard.
Expert resources: Frederique Constant authorized service; FC Runabout product documentation.

Authentication guide

Last reviewed June 2026

The Runabout is FC's nautical-themed dress sport watch; the wood-paneled or vintage-boat dial is the visual signature, and the FC-303 in-house caliber anchors authentication.

Known reproduction risks

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LOW

The Runabout is a low-volume niche reference and not a reproduction target.

  • Wood-plank dial veneer has visible grain; a flat printed image lacks depth under raking light.

Dial variants by era

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EraDescriptionIdentifiers
2015 to presentBlue or silver sunray dial with vintage boat imagery or wood-plank inlay on some variants; Arabic numerals; date at 3 o'clock.
  • FC-303 printed on dial
  • Runabout name on dial
  • Date window with magnification at 3 o'clock
  • Some variants feature stitched leather strap with contrast thread

Service part flags

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Dial

Original: Wood-plank or sunray dial; clean printing; Runabout text at 12 o'clock area.

Replacement tells
  • Plain sunray dial without the Runabout name is not the correct variant.
  • Wood inlay should be real veneer on wood-plank variants; a printed imitation lacks the depth and grain direction.
Strap

Original: Tan leather with contrast blue stitching on sport variants; FC signed buckle.

Replacement tells
  • Unsigned buckle or buckle without FC script.

Case back markings

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2015 to present
  • FREDERIQUE CONSTANT RUNABOUT on caseback
  • FC-303 caliber designation
  • SWISS MADE
  • Solid caseback standard; no display back on base models

Movement tells

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  • The FC-303 is the workhorse FC in-house automatic; the rotor should show the FC engraving and the movement should beat at 28,800bph.
  • Service intervals of 4 to 5 years are typical; a watch with no service history and heavy wear on the strap but pristine movement may have had the strap replaced recently.
Sources: Frédérique Constant Runabout.

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Buying guidance

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