| Faber-Castell 1/91/391 | |
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Front |
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Back |
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| Front without slide | |
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| Back of the slide | |
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Bottom of the slide rule |
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Box |
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| Length | 29 cm |
| Number of scales | 9 |
| Country of origin | Germany |
| Country of manufacturing | Germany |
| Year of manufacturing | 1939 |
| Status of the slide rule | Near mint |
| Material of the slide rule | Celluloid on wood |
| Type of cursor | Glass with metal |
| Status of the box | Normal signs of use |
| Type of box | Black cardboard |
| Status of the manual | |
| Collection number | 205 |
| Further comments | On the box is a sticker from the dealer that sold the slide rule: "Juergens Berlin, Alexanderplatz". Same dealer that sold my 11/60. In pencil there is written also "7.20"; perhaps the original selling price in Deutsch Marks. |
