Longines 430-1561, Centering ring for oscillating weight

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  New Longines original part, not in factory packaging.

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  Fits cal: 430, 431, 432, 433, 6641, 6642, 6651, 6652

Versions: 36.000 A/h. 17 jewels.

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  430: base caliber.
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  431: date.
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  432: no second.
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  433: no second, date.

Versions: 28.800 A/h.

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  6641: 25 jewels, adjusted in 4 pos.
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  6642: 17 jewels.
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  6651: 25 jewels, date, adjusted in 4 pos.
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  6652: 17 jewels, date.