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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 |
KEU213 | Linear | N4058C | 4155 | 6 | Beginner's | Keuffel & Esser | USA | n/a | Boxwood w/printed scales | "10" | 1932 | C1 |
Notes: "Model number 4058C moved from front to back of slide rule above the conversion table. Same as model 4058, match no. 4156 variant no. 2, but with frameless glass indicator with wooden guides."
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