Vintage Keuffel & Esser  #4184-3 Slide Rule with Gold Initials K+E on Leather Case. I have not seen any with these initials in gold. This is a Ivorite Log Rule Decitrig Slide Rule with 21 Scales. Copyright 1947. Made in the USA

In Good Vintage Condition.  Slide Rule transparent lens has a couple of minor green specks maybe from the aging copper rivets. Case is 13" long and 2 1/2" wide and has a 5" stretch from the top and a 3" stretch from about 1/3 of the bottom and up, where the threads no longer holding it together.  It could be resown or glued, but when closure is engaged it serves its purpose. Also case has very light writing on back under the hanging hook. 

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