Angola 1981 Sea Shells Overprinted

=Description=
 * Issue Date: 15-06-1981
 * Designed by: Cutileiro, Alberto
 * Engraving:
 * Printed by: INCM
 * Print Process: Lithography
 * Paper: Glossy
 * Width: mm
 * Height: mm
 * Perforations: 12 x 12½
 * Format: Sheet of 10x10

=Stamps=

=Catalogues= {| width="80%"


 * AR-António Romão (PALOP Stamps)
 * SC-Scott
 * MI-Mitchel
 * YT-Yvert et Tellier
 * NVPH-Dutch Catalogue
 * SG-Stanley Gibbons