K&E KEUFFEL & ESSER 4100S STADIA Slide Rule/case. I believe this to be almost unused.
The slide rule and leather case look totally unused and are perfect. The box has some very minimal wear. It also comes with the instruction.
It is a little must when opened up from being stored. Definitely a collector's slide rule.
The item "Vintage Slide Rule KEUFFEL & ESSER K&E Co New York with Leather Case" is in sale since Saturday, March 18, 2017. This item is in the category "Collectibles\Science & Medicine (1930-Now)\Engineering\Slide Rules". The seller is "myfavoritecousin" and is located in Springfield, Oregon. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, RU, IL, to Mexico, to New Zealand, PH, SG, to Switzerland, NO, SA, UA, AE, QA, KW, BH, HR, MY, CL, CO, CR, DO, PA, TT, GT, SV, HN, JM, AG, AW, BZ, DM, GD, KN, LC, MS, TC, BB, BD, BM, BN, BO, EC, EG, GF, GG, GI, GP, IS, JE, JO, KH, KY, LI, LK, LU, MC, MO, MQ, MV, NI, OM, PK, PY, RE.