This is a fantastic set of Sudan stamps, SG 37-49 with SG 45a and 46ba.  These range in value from 1M to 20Pi. 

This includes the ORDINARY PAPER ISSUES of the 5Pi & 10Pi.  They are all in Mint with either Original Gum or Never Hinged and Very Fine Condition.  All together, they are valued at L120 in the Stanley Gibbons Catalogue.