The bi-colour was issued in 1954, the grey (which has a number of shades) in 1956. I can't see clearly from your pic, but the grey seems to have the re-entry variety around the value.
These are two seperate issues and are both very very common.
According to colnect it should be Yvert # 89 or 89a
Many thanks all for your inputs and explanations
I re-checked my Yvert catalogue, the bistre-yellow & gray is Yv N° 79 and found the gray as N° 89.
Many thanks all
Thanks Paul for SG cat value, however is it possible that from catalogue to catalogue the value change highly
Yvert catalogue list this stamps at 4,00€ MNH and 1,00€ used, then SG list it at £ 38,00 ???
The re-entry variety is £38, not the basic stamp
re: Nigeria unique color ?
The bi-colour was issued in 1954, the grey (which has a number of shades) in 1956. I can't see clearly from your pic, but the grey seems to have the re-entry variety around the value.
re: Nigeria unique color ?
According to colnect it should be Yvert # 89 or 89a
re: Nigeria unique color ?
The re-entry variety is £38, not the basic stamp