Genus species: Armillaria mellea

Series: Mushrooms I (Bulgaria 1961)
Catalog codes:
- Michel: BG 1270
- Stamp Number: BG 1190
- Yvert et Tellier: BG 1106
- Stanley Gibbons: BG 1281
Emission: Commemorative
Perforation: comb comb 12¾ x 12½
Printing: Offset lithography
Colors: Multicolor
Print run: 300,000
Face value: 2 лв - Bulgarian lev

Reference: colnect.com
Shop now link: ebay.com (note: market availability)