Genus species: Coprinellus micaceus

Series: Mushrooms (Cambodia 1985)
Catalog codes:
- Michel: KH 649
- Stamp Number: KH 569
- Yvert et Tellier: KH 577
- Stanley Gibbons: KH 607
Emission: Commemorative
Perforation: comb 12¾
Printing: Offset lithography
Colors: Multicolor
Face value: 0.50 ៛ - Cambodian riel

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