Eichi II
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Authentication
The Credor Eichi II uses a hand-finished Spring Drive movement and a grand feu enamel dial made to a standard comparable to the finest Swiss grand feu work. Authentication concerns are not counterfeiting, since Credor fakes essentially do not exist given the niche nature of the brand. The real risk is model and grade misrepresentation: a wrong Credor model presented as the Eichi II, or a lower Credor grade.
- The Eichi II Spring Drive produces a perfectly smooth glide seconds hand with no tick or stop-start motion; this is the definitive mechanical tell.
- Grand feu enamel dial has depth, translucency, and a slightly convex surface; a printed or fired enamel substitute is immediately obvious under a loupe.
- Zaratsu-polished case surfaces are mirror-flat with no micro-scratches on the flat polished zones; evidence of polishing by non-Zaratsu methods shows micro-scratches at case transitions.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| movement | Spring Drive glide seconds hand | The seconds hand moves in a perfectly smooth, continuous glide with zero tick or pause; this is mechanically unique to Spring Drive and cannot be replicated by a conventional lever escapement | Any tick, hesitation, or stop-start motion in the seconds hand; the seconds hand should never jump even by the smallest increment |
| dial | Grand feu enamel dial quality | Enamel dial has depth, translucency, and a slight convexity; color is consistent and has no printing grain under a loupe; the dial edges show clean vitreous enamel thickness | Flat, printed appearance; any printing grain visible under magnification; inconsistent color saturation; the absence of translucency |
| case | Zaratsu polish on flat case surfaces | Mirror-flat polished surfaces show no micro-scratches and no orange-peel texture; reflections are perfectly clear; transitions to brushed surfaces are sharp | Micro-scratches on polished surfaces; orange-peel texture in the reflection; blurred transitions between polished and brushed zones |
| movement | Power reserve indicator accuracy | Power reserve indicator should read consistently with the state of wind; Spring Drive is known for accurate power reserve indication because the tri-synchro regulator is non-parasitic | Power reserve reading inconsistent with time since last wind; erratic indicator movement |
- Strap replacement is common; confirm correct Credor strap with appropriate clasp.
Authentication guide
The Eichi II houses Seiko's most advanced hand-finishing in the Cal. 7R14. The movement's Zaratsu-polished surfaces and hand-beveled anglage are the benchmark. No replica exists at the production standard required.
