Probably an early 1960's kitchen, I'd say. That was definitely the time that "wood" replaced "color" for kitchen cabinets. Also, AFAIK, Nevamar never produced a line of cabinets. Nevamar was a manufacturer of plastic laminate (competitor to Formica, Wilsonart, etc.), so whomever fabricated the cabinets clad them with this Nevamar woodgrain plastic laminate. And someone took very good care of the whole finished product!
lawrence