Seiko NOS Crown 30M01N – Early Seikomatic / J-Case (1950s/60s) – 1 piece

Original Seiko crown, reference 30M01N, New Old Stock in original bag (compartment 43-S). According to the casing list, suitable for the early cases J13034E and J13044 as well as 6201-8930 – i.e., the era of the Seiko Marvel/Cronos successors and the first Seikomatic automatic models around 1959–1963. The Cronos/early Seikomatic line, in particular, is technically in direct lineage with the later King Seiko and Grand Seiko models; original parts from this early generation are extremely rare.

Warranty (used) This is an unused New-Old-Stock original spare part from old Seiko dealer stock (legally used goods). The warranty is reduced to 12 months according to our terms and conditions.

Note Delivery is in the original Seiko spare parts bag shown. The crown gasket may have hardened due to age; water resistance is not guaranteed. Installation should be carried out by a watchmaker. Price per piece (1 crown).