Journal of the XIX ONS, III Regular Session for 1923. 1928 Edition

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6d 3h 26m

zlatcheto (433)

IPTZ 2 st.print 10th Anniversary Esperanto Congress, Varna, 78

~0⁴¹ €

8d 18h 21m

boby42 (490)

267266 / pure Bulgaria IPTZ 1986 Burgas VHTI University

~0⁴⁶ €

7d 5h 11m

Stamps_Tim (364)

Organizer '' OREGON SCIENTIFIC - AM - 399 C ''

~5¹³ €

2d 6h 26m

ruse05 (1525)

Map Bulgaria Sofia Sofia 4th St. Sofia

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3d 5h 56m

СанМарино (802)

267265 / pure Bulgaria IPTZ 1986 Burgas VHTI University

~0⁴⁶ €

7d 5h 11m

Stamps_Tim (364)

267267 / pure Bulgaria IPTZ 1986 Burgas VHTI University

~0⁴⁶ €

7d 5h 11m

Stamps_Tim (364)

Journals of the XX ONS, I Extraordinary Session for 1923. 1928 Edition

~30⁸⁰ €

6d 3h 26m

zlatcheto (433)

40345 Bulgaria sign VHTI Higher Institute of Chemical Technology

~3⁰⁸ €

4h 49m 10s

velichkover (773)

Map Bulgaria Sofia Sofia 7th St. Sofia

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8d 6h 11m

СанМарино (802)

Appendix of XXI ONS, III Regular Session Volume 2 1925

~30⁸⁰ €

4d 5h 46m

zlatcheto (433)

Post envelope with the 5th sign in 1988 25. VHTI BURGAS 2400

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17h 21m 27s

philatelist#1 (178)

BK ,2186 20 st. 13th session of the OSS-square machine-klimed

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17h 21m 22s

boby42 (490)

* Higher Institute of Chemical Technology (VHTI)

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2d 1h 1m

blagoiger (860)

Old Sign-7th Session of Indian Science Congress 1970-Email

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6d 5h 31m

perun (175)

270937 / pure Bulgaria IPTZ 1986 Burgas - 25 years VHTI

~0⁴⁶ €

17h 36m 27s

Stamps_Tim (364)

Appendix of XXI ONS, II Regular Session Volume 1 1925

~102⁶⁷ €

4d 5h 46m

zlatcheto (433)

37107 Bulgaria sign VHTI Higher Chemical Technological Institute

~1⁵⁴ €

1h 5m 27s

velichkover (773)