Switzerland - First Day Cover - 100 years of ...(1975)

€ 0⁵⁵ 
1⁰⁸ BGN

3d 21h 17m

secko (156)

First day envelope - "Soyuz-Apollo" July 15, 1975

€ 0⁶⁶ 
1²⁹ BGN

6d 12h 42m

emmy (670)

Philippines - First Day Cover - Special Stamp...(1962)

€ 0⁵⁰ 
0⁹⁸ BGN

2d 20h 57m

secko (156)

Bulgaria First Day Cover of No. 2506 from the 1975 catalog

€ 2⁰⁵ 
4⁰¹ BGN

1d 13h 34m

stoian76 (669)

First day envelope - "Soyuz-Apollo" July 15, 1975

€ 0⁵⁶ 
1¹⁰ BGN

6d 12h 42m

emmy (670)

Bulgaria first-day envelope air mail №2704 / 06 since 1975

€ 2⁰⁵ 
4⁰¹ BGN

1d 22h 34m

stoian76 (669)

Filipini - Pyrvodneven plik - Vstypvane v dlyzhnost...(1961)

€ 0⁴⁰ 
0⁷⁸ BGN

2d 21h 2m

secko (156)

GDR - First Day Cover - 450th Anniversary of the Reformation (1967)

€ 0⁴⁰ 
0⁷⁸ BGN

1

3d 22h 55m

secko (156)

Liechtenstein - First Day Cover - 30 Years Red Cross (1975)

€ 0³⁰ 
0⁵⁹ BGN

5d 22h 42m

secko (156)

Bulgaria first-day airmail envelope No. 2704/06 from 1975

€ 0⁷⁷ 
1⁵¹ BGN

1d 22h 34m

stoian76 (669)

Philippines - First Day Cover - 25th Anniversary International... (1975)

€ 0⁶⁰ 
1¹⁷ BGN

2d 20h 52m

secko (156)

Switzerland - First Day Cover - People at Work (1975)

€ 0⁴⁰ 
0⁷⁸ BGN

3d 21h 12m

secko (156)

Bulgaria an ancient envelope of No. 2488/93 from 1975

€ 0⁷⁷ 
1⁵¹ BGN

3d 19h 46m

stoian76 (669)

Bulgaria first day envelope on №2522 from the catalog from 1975.

€ 1⁵³ 
2⁹⁹ BGN

2d 18h 17m

stoian76 (669)

GDR - First Day Cover - 100th anniversary of the birth of ... (1968)

€ 0³⁰ 
0⁵⁹ BGN

1

4d 22h 33m

secko (156)

FIRST DAY FLOWERS OF FRUIT TREES 1975

€ 2⁰⁵ 
4⁰¹ BGN

5d 18h 3m

zizisom (814)

FIRST DAY HISTORY OF BULGARIA 1975

€ 2⁰⁵ 
4⁰¹ BGN

5d 18h 3m

zizisom (814)

Switzerland - First Day Cover - For Youth - Toys (1986)

€ 1²⁰ 
2³⁵ BGN

3d 22h 52m

secko (156)