Citizen Spare Part 393-4035 (1 piece) – Crystal Gasket / Crystal Packing (for crystal 54-50780) – NOS

Original Citizen crystal packing with reference 393‑4035 (Citizen article no. 91433934035) from unused old stock (NOS). A single piece is offered.

This crystal packing belongs to Citizen crystal (クリスタルガラス) reference 54‑50780 and is installed together with it in Citizen case reference 4‑820070. It sits between the crystal and the case, seals the crystal, and is essential for restoring the original water resistance. The case back gasket (393‑0018), which is listed separately for the same case, is not included here.

Note on origin: The part comes from a Citizen crystal set originally labeled with crystal number 54‑50780; the crystal itself has already been removed/installed, so the corresponding crystal packing (393‑4035) is being offered.

The part is unused and ideal for the professional overhaul of classic Citizen watches for which suitable original gaskets are now difficult to obtain.

Manufacturer: Citizen Watch Co., Ltd. (純正部品 / Japan).

Warranty (used) This is an original part (NOS) that has been stored for decades. The limitation period for claims for defects (statutory warranty) is 12 months from delivery.

Note As this is an old stock gasket, the material may lose elasticity or become brittle due to age. Therefore, a guarantee of water resistance is not possible; the gasket should be checked before installation and only installed professionally.