Reference Source

Lotus 1-2-3 spreadsheet (v9) file — file signature 00 00 1A 00 05 10 04 at offset 0

For Lotus 1-2-3 spreadsheet (v9) file, hex signature is 00 00 1A 00 05 10 04; offset is 0; extension is 123, verified against its source on 2026-09-22.

Hex signature
00 00 1A 00 05 10 04 verified
Offset
0 verified
Extension
123 verified
Format
Lotus 1-2-3 spreadsheet (v9) file verified
Sourceen.wikipedia.org
Verified
Review by
DatasetFile format magic numbers

What the source says

00 00 1A 00 05 10 04 | ␀␀␚␀␅␊␄ | 0 | 123 | Lotus 1-2-3 spreadsheet (v9) file |

— en.wikipedia.org, retrieved 2026-09-22

Source

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