{"product_id":"vintage-keuffel-esser-4083-3-log-log-duplex-vector-slide-rule-with-leather-case-and-original-box-note-damage-and-loss-on-slide-20261112","title":"Lot 139 - Vintage Keuffel \u0026 Esser 4083-3 Log Log Duplex Vector Slide Rule with Leather Case and Original Box, Note Damage and Loss on Slide","description":"Vintage Keuffel \u0026amp; Esser 4083-3 Log Log Duplex Vector slide rule with leather carrying case and original cardboard box. Manufactured by Keuffel \u0026amp; Esser Co., New York, and marked \"Made in U.S.A.\" The rule bears multiple patent numbers including Re. 20,984, 1,487,805, 1,930,852, 2,168,056, and 2,170,144, with additional patents pending. The serial number is 0985. The slide rule features a glass cursor with metal frame and includes LL, DF, CF, CI, C, D, LL3, and LL2 scales among others. The leather case has a brown leather flap closure with embossed K+E logo and snap fasteners.\u003cbr\u003e\u003cbr\u003eNote damage and loss on the slide. Portions of the celluloid scale facing on the slide have cracked and broken away, with loose pieces no longer present. The original box shows edge and corner wear with splitting at the seams. The leather case shows wear to the flap and body. Offered as found given the damage to the slide.","brand":"Granite Union Auction Company","offers":[{"title":"Default Title","offer_id":54195724714273,"sku":"20261112-LOT139","price":999999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0073\/9101\/9067\/files\/1baa2f39e116-mvpogfvh.jpg?v=1793158109","url":"https:\/\/graniteunionauction.com\/products\/vintage-keuffel-esser-4083-3-log-log-duplex-vector-slide-rule-with-leather-case-and-original-box-note-damage-and-loss-on-slide-20261112","provider":"Granite Union Auction Company","version":"1.0","type":"link"}