LAOS (1956) UN emblem*. Trial color proofs in strip of 5. Scott No 31, Yvert No 34.
AVAILABLE AT $60
LAOS (1959) Key of Knowledge*. Globe*. Trial color proofs in strip of 5. Scott No 58, Yvert No 61.
AVAILABLE AT $75
LAOS (1959) Dancers*. Musician*. Trial color proofs in strip of 5. Scott No 56, Yvert No 59.
AVAILABLE AT $75