Seiko Lord Matic 5606-7280: dials, wear and buying priorities

The 5606-7280 was built as an automatic Lord Matic with caliber 5606A and 23 jewels, but its defining purpose is visual rather than technical excess. Horizontal gradient banding, faceted applied indices and the angular crystal turn ordinary wrist movement into changing blocks of colour and reflection.

That design places the watch firmly in 1972-1973. It works best when the dial, hands and crystal still read as one geometric composition, rather than as individually renewed parts. A replacement crystal with the wrong profile can leave the watch mechanically usable while removing much of what makes this reference distinct.

Handled examples measure 36 mm or 37 mm excluding the crown, a difference best treated as measurement variation unless the physical cases establish otherwise. In either reading, the 5606-7280 has enough dial area for its horizontal bands to remain obvious without turning into a large modern watch.

The faceted crystal changes the perceived shape more than the one-millimetre spread. It throws reflections across the blue or brown gradient and can make the applied block indices look broader from an angle. Under a cuff, those facets are also the part most exposed to knocks, so crystal condition has an unusually direct effect on both legibility and character.

Hand oxidation is the clearest recurring fault in the examples handled, and it should be described rather than folded into the word patina. Local oxidation can be acceptable beside a clean dial, but corrosion spreading onto the dial surface is damage. A refinished dial costs more in character than honest oxidation on the handset.

Polishing is the next risk because the stainless steel case depends on defined lines; softened edges make the angular crystal look disconnected from the case. Scratches or chips across the crystal facets flatten its optical pattern, while an incorrect replacement profile changes the watch even when it fits. Redials often lose the precise horizontal gradient and the relationship between the printed text and applied faceted indices.

A franken example combines parts that did not leave the factory together, whereas a service dial would be a genuine factory replacement. The available evidence does not establish a service-dial pattern, crown geometry or caseback variation for this reference, so without documentation we prefer not to speculate beyond the dial architecture, 5606A movement and 5606-7280 identity the watch itself establishes.