Sc  1783-86 Endangered Flora  &  1827-30 Coral Reefs. 15 Cent stamps From 1979 & 1980. Two Great Se-tenant  Blocks of 4.  Never Folded, No Perf. Separation. MNH. These Can Be Album Mounted  and Collected Without Issue. Or  Perfect  For Mixing Up Your Postage for Mailing. Have Fun With Stamps. Enjoy More Savings With Reduced Shipping Costs When You Buy More Than One Item In The Same Order. Note: The Stamps You See Are The Stamps You Will Receive, Count On That. Thanks For Looking!