2591 BRAZIL 1996 AMERICAS TELECOM, TELECOMMUNICATION, MI# 2708, CV $11.00 MNH
RM 28.55
Science
3065 BRAZIL 2009 RENEWABLE FUELS, ENVIRONMENT, SCIENCE, RHM C-2772, MNH
RM 4.96
1301 BRAZIL 1973 NICOLAU COPERNICO, ASTRONOMER, ASTROMOMY, SCIENCE, MI# B32 MNH
RM 10.76
25-60 BRAZIL 2025 EXPO 2025 OSAKA - JAPAN, BRAZIL PAVILION, MNH
RM 9.93
3397 BRAZIL 2018 OLD RADIOS, PAPER FOLDING IN THE FORM OF A VALVE RADIO, MNH
RM 14.48
25-75 BRAZIL 2025 MINISTRY OF SCIENCE AND TECHNOLOGY, MCTI, 40 YEARS, MNH
RM 9.93
2880 MEXICO 2014 ASSOCIATION OF SCHOOLS OF ENGINEERING, EDUCATION, SCIENCE, MNH
RM 4.96
1960 BRAZIL 1984 INFORMATICS FAIR & CONGRESS, EYES, SCIENCE, MI# 2077, BLOCK MNH
RM 5.38
2188 MEXICO 2000 MEETING OF MINISTRY OF INFORMATION TECHNOLOGY, MI# 2838, MNH
RM 4.10
3291 BRAZIL 2014 ST PETER & ST PAUL ARCHIPELAGO, SCIENCE, LIGHTHOUSE, B-181, MNH
RM 14.89
17-16 MEXICO 2017 TELECOMMUNICATIONS AND BROADCASTING REFORM, SCIENCE, MNH
RM 4.55
21-28 MEXICO 2021 CCH - COLLEGE OF SCIENCES AND HUMANITIES, 50 YEARS, MNH
RM 5.38
2719 BRAZIL 1999 POLITICAL AMNESTY, 20 YEARS, FLAG, MI# 2952 RHM C-2209, MNH
RM 4.10
16-27 MEXICO 2016 IFT - FEDERAL INSTITUTE OF TELECOMMUNICATIONS, SCIENCE, MNH
RM 5.38
2756 BRAZIL 2000 ANISIO TEIXEIRA, EDUCATOR, SCIENCE, MI# 3050 RHM C-2294, MNH
RM 4.10
BRAZIL 2019 2020 ZODIAC SIGNS + MANDALA, ASTROLOGY, CONSTELLATION, 16V, SET MNH
RM 61.64
2806 BRAZIL 2001 CAPES, EMPOWERING FOR THE FUTURE, SCIENCE, MI# 3167, MNH
RM 4.14
1856 BRAZIL 1983 WORLD COMMUNICATIONS YEAR, SATELLITE, SPACE MI# 1963 C-1320 MNH
RM 6.62
1281-82 BRAZIL 1973 MINISTRY COMMUNICATIONS, NEPTUNE, TELECOM., MI# 1364-65, MNH
RM 5.79
1708 BRAZIL 1980 RED CROSS, CHAGAS, MICROSCOPE INSECTS MI# 1782 C-1159 BLOCK MNH
RM 6.21
21-27 MEXICO 2021 - 20 YEARS OF HUAWEI IN MEXICO, TECHNOLOGY, SET MNH
RM 45.10
1371 BRAZIL 1974 HYDROELECTRIC, DAM OVER PARANA RIVER, ELECTRICITY, MI# 1462 MNH
RM 4.55
21-24 MEXICO 2021 TELEGRAPH, 170 YEARS, COMMUNICATION, SCIENCE, MNH
RM 5.79
20-05 BRAZIL 2020 ZODIAC SIGNS - MANDALA, ASTROLOGY, CONSTELLATIONS, S/S 4V MNH
RM 24.82
2729 MEXICO 2010 FIDE, 20TH ANNIV., ENERGY, ELECTRICITY, SCIENCE, MNH
RM 5.79
1825 BRAZIL 1982 TELEBRAS, 10th ANNIV., TELEPHONES, MI# 1932 RHM C-1289, MNH
RM 4.14
24-19 MEXICO 2024 NATIONAL CENTER FOR CONTROL OF ENERGY, CENACE, ELECTRICITY,MNH
RM 5.38
1680-83 BRAZIL 1980 ENERGY ALTERNATIVES, ALCOHOL, SOLAR, ENVIRONMENT, SET MNH
RM 8.07
1076 BRAZIL 1968 UNDERWATER EXPLORATIONS AT PARANAGUA, DIVER, MI# 1164, MNH
RM 4.14
1320 BRAZIL 1973 - 50 YEARS OF BRAZILIAN TELEPHONE CO., TELECOM, MI# 1407, MNH
RM 4.10
2930-32 BRAZIL 2004 BRAZILIAN INVENTIONS, HEALTH, TELEPHONES, MI# 3376-78, MNH
RM 4.34
1415 BRAZIL 1975 CITEL, CONFERENCE OF TELECOMMUNICATIONS, MAPS, MI# 1511, MNH
RM 6.62
2790 MEXICO 2012 - 75 YEARS CFE, COMMISSION FEDERAL ELECTRICITY, ENERGY, MLH
RM 24.41
2204 BRAZIL 1989 - 1st HYDROELECTRIC IN SOUTH AMERICA, WATERFALL, MI# 2317, MNH
RM 6.83
1996 BRAZIL 1985 MARSHAL RONDON, EDUCATOR, MILITARY, TELEGRAPH LINES SCIENCE MNH
RM 6.83
2128-29 BRAZIL 1988 ENERGY RESOURCES, ELECTRICITY, FUEL, MI# 2245-46, BLOCKS MNH
RM 7.86
21-25 MEXICO 2021 NTL INST. ASTROPHYSICS, OPTICS AND ELECTRONICS, SCIENCE, MNH
RM 5.17
1475 BRAZIL 1976 CONFERENCE OF ATOMIC ENERGY AGENCY, SCIENCE, MI# 1560,BLOCK MNH
RM 9.10
3415 BRAZIL 2019 SOLAR ECLIPSE IN SOBRAL, ALBERT EINSTEIN RELATIVITY THEORY MNH
RM 4.96
2741 BRAZIL 2000 TRADE NET WEBSITE, MAPS, COMPUTING, MI# 3027 RHM C-2275, MNH
RM 4.10
2077 BRAZIL 1986 FEDERAL BROADCASTING SYSTEM, MICROPHONE, RHM C-1521, BLOCK MNH
RM 5.17
1223-26 BRAZIL 1972 UNIFICATION COMMUNICATION, POST, TELECOM, MI# 1317-20, MNH
RM 8.69
18-06 MEXICO 2018 STATE-OWNED PETROLEUM COMPANY, PEMEX, 80 Y, OIL, SCIENCE, MNH
RM 6.62
1886 BRAZIL 1983 LOUIS BREGUET, ENGINEER, TELEGRAPH, SCIENCE, MI# B62, S/S MNH
RM 6.41
1680-83 BRAZIL 1980 ENERGY ALTERNATIVES, ALCOHOL, SOLAR, ENVIRONMENT, BLOCKS MNH
RM 31.86
3396 BRAZIL 2018 SCIENTISTS: CESAR LATTES, JOANNA DÖBEREINER, ATOM, SCIENCE MNH
RM 6.62
2948 MEXICO 2015 TECHNOLOGICAL INSTITUTE OF LA LAGUNA, ART, MOSAIC, SCIENCE, MNH
RM 6.21
2077 BRAZIL 1986 FEDERAL BROADCASTING SYSTEM, MICROPHONE, RHM C-1521, MNH
RM 6.99