WWII DETAINED MAIL TO NETHERLANDS; Quartet with 1940 PPC to Eindhoven franked 100r + 100r & 400r with a Dutch-language typed-script label Amsterdam March 1948/Due to war conditions/Received with a delay' and tied by a Dutch-language "Director of the Post Office Amsterdam/[signature]" - the only example believed to exist, 1940 envs. to Amsterdam, Arnhem or Rotterdam Rio franked 1200r or 1000r + 200r with a Dutch-language typed-script label Amsterdam March 1948/Due to war conditions/Received with a delay' on front. (4 covers) Cross Reference: MILITARY - SERVICE SUSPENDED, NETHERLANDS (Image)