SLAWIKAU 9.4.1921 single circle (326.1) on cover with single franking 40 Pfg green olive postage stamps issue 1920 to Regensburg, the letter became as insufficiently franked near the post office Regensburg 2 postage due: single circle postage cleared / PA / REGENSBURG 2 / BHF an and manuscript notation 40 with blue pencil, transport traces