Royal response from His Imperial and Royal Highness the Pricne of Prussia on the occasion of Christmas 1977 and New Year 1978.
The reply is in the form of a card which has a family photo of The Imperial Family and a message in German on the opposite side and signed by His Imperial and Royal Highness.
Picture
Message
Translation
I thank you from the bottom of my heart for your lovely Christmas and New Year wishes.
I have very much felt your faithful memory.
All the best for 1978.
RoyalResponses 
very nice find
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