Seiko Original Dial 3423-0010 "Seiko Quartz" (SQ, cushion-shaped, date) – NOS, flawless

Original Seiko replacement dial, dial/caliber code 3423-0010 (T), Seiko part/order no. according to packaging "342300101KS21", manufactured by Seiko (Hattori & Co.) in Japan. Unused original part (New Old Stock, NOS) in its original Seiko "純正部品 / Genuine Parts" blister pack – in impeccable, flawless condition.

The cushion-shaped dial (TV/Tonneau form) features a bright, silver/champagne-colored finish with applied, polished stick indices and a date aperture at 3 o'clock. Below the 12, the printed lettering "SEIKO QUARTZ", and below that, the characteristic "SQ" emblem of the Seiko Quartz line; at the bottom edge, the factory designation "JAPAN 3423-0010 T". Central second hand, date – an elegant dress dial from the early Quartz era.

A sought-after original part for collectors, watchmakers, and restorers who wish to authentically restore a Seiko Quartz caliber 3423.

Historical Classification: Seiko "SQ" in relation to King Quartz / Grand Quartz

The "SQ" emblem stands for Seiko Quartz, Seiko's high-volume Quartz line of the late 1970s and early 1980s. Within Seiko's Quartz hierarchy, it is positioned below the prestige lines King Quartz (KQ) and Grand Quartz – those premium Quartz series that, during the Quartz era, continued the legacy of the mechanical icons King Seiko and Grand Seiko, as these mechanical lines largely phased out in the early 1980s. So, looking from "SQ" to the top, one arrives at King Quartz/Grand Quartz and thus in the direct succession of King Seiko and Grand Seiko. Caliber 3423 itself is a robust, everyday standard Quartz movement of this SQ world.

Technical Specifications

• Manufacturer: Seiko (Hattori & Co., Ltd.), Japan
• Part: Dial
• Dial/Caliber Code: 3423-0010 (T)
• Seiko Part/Order No. (Packaging): 342300101KS21
• Caliber Compatibility: Seiko 3423 / 3423A (Analog Quartz with Date)
• Line: Seiko Quartz "SQ"
• Shape: Cushion-shaped (TV/Tonneau form)
• Color: Silver/Champagne
• Indices: Applied, polished stick indices
• Date Aperture: Yes, at 3 o'clock
• Markings: "SEIKO QUARTZ", SQ emblem, "JAPAN 3423-0010 T"
• Material: Metal, galvanized/satin-finished
• Dimensions: approx. 23–25 mm (cushion-shaped) – please measure
• Condition: NOS – unused, impeccable/flawless
• Origin: Japan
• Packaging: Original Seiko "純正部品 / Genuine Parts" blister pack

Note

The dial is unused and in impeccable NOS condition; the cardboard box/blister pack may show slight signs of storage and age. Ideal original part for an authentic restoration of Seiko 3423 Quartz models.