Sweden. Military postal stationary Facit M2 P , Proof for M2 in letterpress (boktryck) 1930 with the plate in metal for the issue. The issue was then printed in offset. Most probably printed by Lithografiska AB in Norrköping. Very few known according to the handbook for Swedish Military letters with reply stamp (ISBN 91 85702.33 1). Excellent quality. Exhibition item!