Faber Castell 2x Novo Duplex 2/83 and 2/82 slide rule case 1960 Germany

Combination of 2 slide rules, the Duplex 2/82 and the Novo Duplex 2/83 (predecessor of the “N” execution). Both come in their complete plastic boxes brand logo (no extra’s). In the 1960’s these were amongst the best slide rules by Faber Castell. The rules and cursors are in good condition with some signs of age and use (some yellowing). These large rules measures ca. 33 cm or 13 1/4 inches long. They have the same earlier plastic cursor with white edges, (the later ones are all see-through). The cases protected the slide rules well and have some signs of storage to show for it Check the attached video I found on YouTube on how to work your vintage man tool: slide rule operation instructions!