I just got this Saturday and did some swapping for it .I did some background work and looking through some old catalogs here I do believe it's a 1964 year but could be off a year not sure?    Anyone who can shed a little more light on it please join in and let me know if you don't mind . In the meantime here is a few before and after pictures I took of cleaning it up.
  I made a 14 strand B-50 Dacron and puffs for it and this old girl can shoot pretty good.
Before
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After
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Looks like a honey for sure 

Many more cleaned up
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Wow, that is a beauty!

Sweet bow! 1964 KS was a great bow that was lost in the shadow of the Tamerlane marketing.

That is flat-out gorgeous, Keefer!