>1951

1951 Local Motives with Imprint "Inst. de Grav. Paris"

Stamp 473
HY3-s.jpg 15C
bluish green
Stamp 474
HZ3-s.jpg 20C
violet
Stamp 475
IA3-s.jpg 50C
brownish orange
Stamp 476
IB4-s.jpg 1S
dark brown

1951 Airmail - The 75th Anniversary of U.P.U. - Unissued Stamps inscribed "VI CONGRESO DE LA UNION POSTAL DE LAS AMREICAS Y ESPANA-1949" Overprinted "U.P.U. 1874-1949"

Stamp 477
JQ-s.jpg 5C
bluish green
Stamp 478
JR-s.jpg 30C
red/black
Stamp 479
JS-s.jpg 55C
yellowish green
Stamp 480
JT-s.jpg 95C
dark green
Stamp 481
JU-s.jpg 1.50S
dark red
Stamp 482
JV-s.jpg 2S
dark blue
Stamp 483
JW-s.jpg 5S
carmine rose
Stamp 484
JX-s.jpg 10S
purple
Stamp 485
JY-s.jpg 20S
brown/ultramarine

1951 Airmail - Local Motives with Imprint "Inst. de Grav. Paris"

Stamp 486
IF4-s.jpg 5C
yellowish olive

1951 Airmail - Overprinted "HABILITADA S/o." and Surcharged 0.25

Stamp 487
IJ3-s.jpg 0.25/30C
red

1951 The 5th Pan-American Highways Congress - Unissued "VI CONGRESO DE LA UNION POSTAL" Stamps, Overprinted "V Congreso Panamericano de Carreteras 1951"

Stamp 488
JZ-s.jpg 2C
green
Stamp 489
KA-s.jpg 4C
red
Stamp 490
KB-s.jpg 15C
grey
Stamp 491
KC-s.jpg 20C
sepia
Stamp 492
KD-s.jpg 50C
purple
Stamp 493
KE-s.jpg 1S
bluish green
Stamp 494
KF-s.jpg 2S
blue
Stamp 495
KG-s.jpg 5S
reddish brown
Stamp 496
KH-s.jpg 10S
chocolate brown

1951 Airmail - The 400th Anniversary of San Marcos University

Stamp 497
KI-s.jpg 30C
black
Stamp 498
KJ-s.jpg 40C
blue
Stamp 499
KK-s.jpg 50C
red
Stamp 500
KL-s.jpg 1.20S
green
Stamp 501
KM-s.jpg 2S
blue
Stamp 502
KN-s.jpg 5S
multicoloured

1951-1952 Overprinted "HABILITADA S/." and Surcharged

Stamp 503
HV2-s.jpg 1/2C
emerald green
Stamp 504
HY4-s.jpg 5/15C
bluish green
Stamp 505
HY5-s.jpg 10/15C
bluish green