When blue is blue

Scientific treatise and study on the composition of the paint on the Protectorate 5h blue linden leaf stamp. Study of the dependence of the amount of paint on the color shade of postage stamps.

03. 05. 2025
Complete description

Postage Stamp

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09. 05. 2003 - 31. 12. 2009
Ladislav Mednansky - Stream behind the Barn, On the Stream Bank
Postage Stamp
Ladislav Mednansky - Stream behind the Barn, On the Stream Bank
03. 05. 2003 - 31. 12. 2009
Milan Rastislav Stefanik (1880 - 1919)
Postage Stamp
Milan Rastislav Stefanik (1880 - 1919)
06. 12. 2002
30th anniversary of the flight of Apollo 17 to the Moon - Eugen Andrew Cernan
Postage Stamp
30th anniversary of the flight of Apollo 17 to the Moon - Eugen Andrew Cernan
12. 10. 2002 - 31. 12. 2009
Bojnice Castle
Postage Stamp
Bojnice Castle
12. 10. 2002 - 31. 12. 2009
Terraces in Handan
Postage Stamp
Terraces in Handan
04. 07. 2002 - 31. 12. 2009
Slovakia - Ice Hockey World Champion 2002
Postage Stamp
Slovakia - Ice Hockey World Champion 2002
04. 07. 2002
Greeting congratulation (with a personalized coupon)
Postage Stamp
Greeting congratulation (with a personalized coupon)
26. 06. 2002 - 31. 12. 2009
Butterflies - Old World swallowtail
Postage Stamp
Butterflies - Old World swallowtail
08. 02. 2002 - 31. 12. 2009
European Championships in dog sleds sprint Donovaly 2002
Postage Stamp
European Championships in dog sleds sprint Donovaly 2002
25. 01. 2002 - 31. 12. 2009
XIX. Winter Olympic Games Salt Lake City 2002
Postage Stamp
XIX. Winter Olympic Games Salt Lake City 2002
15. 10. 2001 - 31. 12. 2009
Postage Stamp
11. 10. 2001 - 31. 12. 2009
Sturovo - Ostrihom Bridge (ex Maria Valeria Bridge)
Postage Stamp
Sturovo - Ostrihom Bridge (ex Maria Valeria Bridge)
16. 01. 2001 - 31. 12. 2009
European Championship in Figure Skating and Ice Dancing Bratislava 2001
Postage Stamp
European Championship in Figure Skating and Ice Dancing Bratislava 2001
18. 12. 2000 - 31. 12. 2009
History of the Postal Law
Postage Stamp
History of the Postal Law
17. 10. 2000 - 31. 12. 2009
Art: Nativity from Spisska Stara Ves
Postage Stamp
Art: Nativity from Spisska Stara Ves
13. 10. 2000 - 31. 12. 2009
Postal Agreement with the Sovereign Order of the Knights of Malta
Postage Stamp
Postal Agreement with the Sovereign Order of the Knights of Malta
27. 06. 2000 - 31. 12. 2009
Olympic Games Sydney 2000 - Sport shooting
Postage Stamp
Olympic Games Sydney 2000 - Sport shooting
01. 06. 2000 - 31. 12. 2009
Children Postage Stamp - UNICEF
Postage Stamp
Children Postage Stamp - UNICEF
15. 02. 2000 - 31. 12. 2009
Euroleague 2000 - Women`s basketball
Postage Stamp
Euroleague 2000 - Women`s basketball
15. 02. 2000
World Year of Mathematics - Jur Hronec, Štefan Schwarz
Postage Stamp
World Year of Mathematics - Jur Hronec, Štefan Schwarz
18. 12. 1999 - 31. 12. 2009
Day of postage stamp: Albín Brunovský (1935 - 1997)
Postage Stamp
Day of postage stamp: Albín Brunovský (1935 - 1997)
23. 11. 1999 - 31. 12. 2009
Museum of Jewish Culture - Haban ceramics (faience pitcher in 1734)
Postage Stamp
Museum of Jewish Culture - Haban ceramics (faience pitcher in 1734)
23. 11. 1999 - 31. 12. 2009
Museum of Jewish Culture - Haban ceramics (faience pitcher in 1776)
Postage Stamp
Museum of Jewish Culture - Haban ceramics (faience pitcher in 1776)
03. 11. 1999 - 31. 12. 2009
Christmas 1999: Winter and winter fun
Postage Stamp
Christmas 1999: Winter and winter fun
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