IWC 851-220, Fourth wheel

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  Used original IWC part in very good condition.

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  Fits cal: 851, 852, 8521, 853, 8531

Versions: 12.75''' (1951 - 1963).

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  85: 18.000 A/h, H=5.45 mm.
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  851: 18.000 A/h, H=5.45 mm.
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  852: 19.800 A/h, H=5.60 mm.
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  8521: 19.800 A/h, date, H=6.40 mm.
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  853: 19.800 A/h, H=5.60 mm.
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  8531: 19.800 A/h, date, H=6.40 mm.

Versions: 12,5''' (1963 - 1974).

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  854: 19.800 A/h, H=4,85 mm.
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  8541: 19.800 A/h, date, stop mechanism, H=5.90 mm.
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  854B: 19.800 A/h, stop mechanism, H=4.85 mm.
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  8541B: 19.800 A/h, date, stop mechanism, H=5,90 mm.

About our used parts!

Allused partsarecleaned andthoroughlycheckedby a watchmaker, often they come froma workingmovement.Minor imperfectionsmay occur,butnothing that affectsthe function.