'Nippon' is one of the Japanese words used for 'Japan'. In the world of "The Man in the High Castle," 'Pons' is a derogatory short-hand for the Japanese.
"L'Chaim" is a Hebrew saying which literally means 'to life', commonly used to make toasts. In "The Man in the High Castle," the Nazis have prioritized the eradication of the Jewish race, so using sayings like this in public is not only illegal, but highly dangerous.
"The Man in the High Castle" production design team imagined Hitler would use younger images of himself in propaganda material and billboards to inject a sense amongst his people that the Reich still has the same power and vigor it had during the war.
In the world of "The Man in the High Castle," fashion is still heavily influenced by the 1950's. Gloves were a common element of attire during that era and here they represent propriety, correctness, and modesty.
The design of the Crown Princess' kimono is a nod to the famous pink suit Jackie Onassis wore the day John F. Kennedy was assassinated.