No. 16 & No. 17 - arriving mail art "Otto privat" & "Grosse Koalition" from Heinz W. Lotz (Germany)

No. 16 & No. 17 - arriving mail art "Otto privat" & "Grosse Koalition" from Heinz W. Lotz (Germany) - two more interesting collage using several Bismarck images. Thank you very much.