“Day 27: This is a set issued in 1921 by Drei-Türme-Verlag GmbH in Hamburg. The complete set includes 2 notes, both with almost identical designs but printed in 2 different color schemes for each denomination (Orange = 40 Pf, Blue = 60 Pf).
The more common variety of this set features a red serial number, but the set featured here is the black serial number variety and is more scarce.
The catalog value for this set is around $50.”
