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Westclox Big Ben Style 5a Loud Back Type Variations

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The first backs have PAT. PDG., most backs have DES.114262

1 Has three patents and PAT. PDG. Used ca. April 1939.. Big 5a Back 1
Big 5a Back 1
1 Has three patents and PAT. PDG. Used ca. April 1939.. Big 5a Back 1
Big 5a Back 1
1 Has three patents and PAT. PDG. Used ca. April 1939.. Big 5a Back 1 (4-39)
Big 5a Back 1 (4-39)

Back Type 1:

Has three patents and PAT. PDG. Used ca. April 1939.

PATD. U. S. A.
1563431
1709146
1848520
PAT. PDG.
MADE IN U. S. A.


2 Has three patents and DES.114262. Used on examples from ca. June 1939 on.. Big 5a Back 2. DES. 114262
Big 5a Back 2. DES. 114262
2 Has three patents and DES.114262. Used on examples from ca. June 1939 on.. Big 5a Back 2. DES. 114262
Big 5a Back 2. DES. 114262
2 Has three patents and DES.114262. Used on examples from ca. June 1939 on.. Big 5a Back 2
Big 5a Back 2

Back Type 2:

Has three patents and DES.114262. Used on examples from ca. June 1939 on.

PATD. U. S. A.
1563431
1709146
1848520
DES. 114262
MADE IN U. S. A.

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