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Westclox Big Ben Style 5 Chime Back Type Variations

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All Ben Ben Style 5 Chime Alarm backs that I've seen have five patent numbers. There MAY be an early back without the design patent number.

1 Has five patent numbers.. Big 5 Chime Back 2
Big 5 Chime Back 2
1 Has five patent numbers.. Big 5 Chime Back 2
Big 5 Chime Back 2
1 Has five patent numbers.. Big 5 Chime Back 2
Big 5 Chime Back 2

Back Type 1:

Has five patent numbers.

PATENTED U. S. A.
1563431
1709146
1848520
1858563
DES. 114262
MADE IN U. S. A.

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