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| Layer VI ... AMS 976 Horizontal (normal) ... 30 May 1938 ... Layer VI. |
| Layer VI ... AMS 976 Horizontal (normal) ... 30 May 1938 ... Layer VI. |
| Layer VI, cleaned ... AMS 1056 Horizontal (normal) ... 6 Jun 1938 ... Layer VI, cleaned. |
| Layer VI partly gone ... AMS 1781 Horizontal (normal) ... Layer VI partly gone. |
| From southeast. Layer VI gone ... Scanned 2005 for the 75th anniversary exhibition and publication. 2164 Horizontal (normal) ... 25 Feb 1938 ... From southeast. Layer VI gone. |
| Layer VI cleaned, looking east ... AMS 916 Horizontal (normal) ... 27 May 1938 ... Layer VI cleaned, looking east. |
| Outside at north. Layer VI ... AMS Horizontal (normal) ... Outside at north. Layer VI. |
| Outside at north, Layer VI ... AMS Horizontal (normal) ... Outside at north, Layer VI. |
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