The German Greeting Heil Hitler! Enamel Sign
This little enamel sign, manufactured to be placed next to a doorway, was intended to remind people to use Heil Hitler as their daily greeting. There was strong pressure after the Nazi takeover to push Heil Hitler as the common greeting and after the July 1944 bomb attempt it became mandatory over military as well as civilians. This one says, for the sake of the search engines, Der Deutsche grüßt heil Hitler!