The material is scanned from a paper versions on DVD disc in PDF format(single or double pages) Great quality, the picture can be increased several times, without loss of image quality! Scott 2023 Volume 6 (A+B, set of 2 copies) Standard catalog of postage stamps (on disk) Volume 6 (A+B, set of 2 copies) States San Marino -Zimbabwe 2150 pages, 663 MB. PDF format. DESCRIPTION: The 2023 Scott Catalogs (6A+6B) are the 179th edition of Scott's standard stamp catalogues.Contains brand information for the following countries: San Marino - Saudi Arabia - Senegal - Serbia - Seychelles - Sierra Leone - Singapore - Slovakia - Slovenia - Solomon Islands - Somalia - South Africa - South Georgia and the South Sandwich Islands - Spain - Sri Lanka - Sudan - Suriname - Swaziland - Sweden - Switzerland - Syria - Tajikistan - Tanzania - Thailand - Timor - Togo - Tokelau - Tonga - Niuafuu - Trinidad and Tobago - Tristan da Cunha - Tunisia - Turkey - Turkish Republic of Northern Cyprus - Turkmenistan - Turks and Caicos Islands - Tuvalu - Uganda - Ukraine - United Arab Emirates - Uruguay - Uzbekistan - Vanuatu - Vatican City - Venezuela - Vietnam - Virgin Islands - Wallis and Futuna Islands - Yemen - Zambia - Zaire (Democratic Republic of Congo) - Zimbabwe BONUS: 1.An Introduction for English-speaking readers(Use the Michel catalogue) , PDF 2.Michel Rundschau 2024 (complete set) ,PDF 3. STAMP MAGAZINE 2024(complete set) ,PDF 4. STAMP COLLECTOR 2024(complete set),PDF ALL in color If you have any problem,please do not leave negative feedback first directly,we will try our best to help you to solve any problem.Thank you. It is possible to send online. If you are interested and have time, please contact us for additional interesting information about other catalogs that are available.