First-day envelope May 24, 1978 - Day of Slavic writing

€ 0⁵¹ 
1⁰⁰ BGN

7d 22h 23m

emmy (660)

France - First Day Cover - Nature Conservation...(1979)

€ 0³⁰ 
0⁵⁹ BGN

2d 8h 53m

secko (147)

First Day Envelope 1978 - Year of the Struggle Against Apartheid

€ 0⁶¹ 
1¹⁹ BGN

3d 10h 23m

emmy (660)

France - First Day Cover - Nature Conservation...(1974)

€ 0³⁰ 
0⁵⁹ BGN

2d 8h 53m

secko (147)

France - First Day Cover - Conservation of ... (1981)

€ 0³⁰ 
0⁵⁹ BGN

2d 8h 48m

secko (147)

Postal envelope with the sign 2 st. OK. 1978 MARK Day 0380

€ 0⁷⁷ 
1⁵¹ BGN

7d 12h 58m

philatelist#1 (197)

1978 STARA ZAGORA IV DISTRICT FILAT. EXHIBITION FIRST DAY ENVELOPE

€ 1⁰² 
1⁹⁹ BGN

4h 3m 48s

luba_mateva (1246)

272089 / Bulgaria FDC 1978 Day of Slave Communications

€ 0²⁶ 
0⁵¹ BGN

7d 5h 58m

Stamps_Tim (385)

First Day Mailing Envelope Airships, First Day, 2000

€ 2⁵⁶ 
5⁰¹ BGN

1d 2h 43m

emmy (660)

Postal envelope with the sign 2 st. OK. 1978 SHUMEN 1878 -1978 0928

€ 1²⁸ 
2⁵⁰ BGN

4h 18m 48s

philatelist#1 (197)

Envelope with stamp and special stamp Nature 1998 from France

€ 0⁷⁷ 
1⁵¹ BGN

3d 4h 23m

ESCC1 (285)

First Day Envelope 1978 Soviet-Czechoslovak Space Flight

€ 4⁰⁹ 
8⁰⁰ BGN

6d 3h 39m

trini (164)

Switzerland - First Day Cover - Municipal Coats of Arms (1978)

€ 0⁷⁵ 
1⁴⁷ BGN

6d 7h 58m

secko (147)

Great Britain - First Day Cover - British ...(1978)

€ 0³⁵ 
0⁶⁸ BGN

10h 48m 50s

secko (147)

First-day postal envelope NATURE

€ 0⁶¹ 
1¹⁹ BGN

2d 13h 3m

stemi999 (258)

Sweden - First Day Cover - Bear (1978)

€ 0²⁵ 
0⁴⁹ BGN

2d 9h 33m

secko (147)

First-day postal envelope 1978 - "Danube - European River"

€ 0⁵¹ 
1⁰⁰ BGN

7d 22h 23m

emmy (660)

Cyprus - First Day Cover - Year of Conservation...(1970)

€ 0⁴⁰ 
0⁷⁸ BGN

2d 9h 8m

secko (147)