French Morocco 1948 Solidarity Souvenir Sheets Die Proofs. Group of 6 Die Proofs each in colors different from the issued sheet, said to be only 2 sets in existence; see Sanabria DL69, listed in 1966 at $20 each, o.g., lightly hinged, Very Fine and attractive. Scott No. CB34a vars  Estimate $250 - 350. $0 (Image)