Letter from APO 810, Iceland 25 March 1942 to Michigan, USA. Mixed franking with Icelandic 10 aur herrings and US 3¢, tied by machine cancel “AMERICAN BASE FORCES / A.P.O. 810/ MAR25 / 1942”. Sent by K. P. Coan, 1st. LT. 46th F.A.Bn. Mixed frankings are unsual, although the Iceland stamp were superfluous.