|XXXI Commemorative issue of 1st October 1928|
Issued to commemorate the 50th anniversary of the annexion of Dobrogea
|XXXI A Printed on glaced paper
XXXI B Printed on very thick paper
Except from these essays Cohen mentions two projects of which he has reproductions.
These has, just as XXXI A, the wrong year for the annexion (1888 instead of 1878)