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compatibility For early Seikosha wristwatches with small movement sizes (approx
with its delicate texture
Original part number: B2290B
which distinguishes day and night
you will love this writing instrument
SEIKO Original Gehäusedichtung / O-Ring – Referenz OB2290B (NOS) Quarz compatibility For early Seikosha wristwatchesOriginal SEIKO housing gasket (packing gasket) with reference B2290B , supplied in the original SEIKO packaging. This is an unused NOS (New Old Stock) spare part from old stock, manufactured according to the SEIKO factory specifications of the time. This seal was used by SEIKO for classic case designs and is particularly suitable for vintage SEIKO watches of the 1970s and early 1980s that use a flat O ring seal (e. g. snap back or press fit case).