ALGERIA (1939) Caillié*. Lavigerie*. Duveyrier*. Trial color die proof in green. Pioneers of the Sahara. Scott No B29, Yvert No 150. Scarce!
AVAILABLE AT $60
ALGERIA (1957) Fennecs*. Red Cross*. Trial color proof strip of 5. Scott No B88, Yvert No 343.
AVAILABLE AT $100
ALGERIA (1957) Stork*. Trial color proofs in margin strip of 5. Scott No B89, Yvert No 344.
AVAILABLE AT $80