Nyasaland KGVI 10sh 1938 Shade Reference
Gibbons refers to SG142a as being on ordinary paper, but it shows characteristics of chalky paper with surface pitting and small, dark surface marks.
Nyasaland 1938 KGVI 10sh Emerald and Deep Red SG142
Nyasaland 1938 KGVI 10sh Bluish Green and Brown-Red on Pale Green SG142a