Seiko 4205-015* Case Spring
1 case springs
Seiko Part Number 8133-2139
Fits Seiko Divers cases in the case number series 4205-015*
Does not fit the 4205-014* series
Secures the movement when the back is screwed on
Modern reproduction in spring stainless steel
Original carbon steel part no longer produced, this stainless steel copy, will last a lifetime, no rust.
This is for 1 spring
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