1944 Private issue, not valid for postage
It seems some people wanted to launch these as valid "alternative stamps",
somewhat like the Hohe Rinne issues, but they were never accepted as such.
What I´ve heard there exists a couple of letters with these on, but they are all marked
with Postage Due,or have added valid stamps
Blue perforated in complete sheet Red perforated in complete sheet
Essays? Forgeries?