Sweden. Military postal stationary Facit Mu1 , The Swedish Åland Detachement 1918. A lovely censored Mu1 with red Å + censor sign "G R" (= Lieutenant-Colonel Gustav Ros), cancelled "STOCKHOLM 30" 13.4.18. Sent to Mjölby with arrival cancel "MJÖLBY" 14.4.18. Have been folded. Good quality and a postal history exhibition item!