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| Item# | Type | Model No. | Match No. | Variant No. | Model Name | Maker | Country | Production or Serial No. | Material | Scale Length | Date | Condition |
| KEU273 | Linear | 4058C | 4157 | 2 | Beginner's | Keuffel & Esser | USA | n/a | Boxwood w/printed scales | "10" | 1940 | C3 |
Notes: "Bar or line added across top of conversion table on back of slide rule. Same as model 4058, match no. 4156 variant no. 4, but with frameless glass indicator with wooden guides."
Click on the Condition Code to obtain more details.
