Southwest Africa 1917 Namutoni ½d Postal Card Reply Censored Sent to Windhuk; DPO Opened in Mid 1916 & Closed in 1921; Date-stamp has Inverted Date Slug & is Illustrated in Putzel on Page 329 & is Only Known on 22 August 1917; Namutoni in Owambo Language means "Place on a Hill"; The Germans built a Fort there in 1897 and provides a reasonable explanation for its name; Namutoni is Now Located in the Namibia's Etosha National Park; A Rare Commercial Postal History Item (46-1750)