TIMBRU BURSEI BUCURESCI
all black print on colored paper

Blue overprint 5B violet, 5B white 10B green 20B brown, 20B grey 25B green, 25B yellow 50B purple, 50B blue 1L bluish grey, 1L  light lilac 2L red 5 brown, 5L grey, 5L pink Imperf: 50B white Inverted ovp: 5B white, 10B green, 50B purple, 2L red
Red overprint 5B white, red 10B green 20B brown, 25B green, 50B purple, 1L blue, rose grey 2L red 5 brown
Violet overprint 5B white, red 10B green 20B brown, 25B green, 50B purple, 1L blue, rose 5 brown

Note: It is sometimes hard to judge the difference between blue and violet ovp from an image -
if it looks black..............