2006 Lighthouses of the 20th Century - Se-tenant Blocks in 5x Mini Sheet format

This is an exclusive release of the 2006 Lighthouses of the 20th Century in different combination 'Se-tenant Blocks 4' in five Miniature Sheets format. The regular-issue set was released as a joined 'Se-tenant Strip of 5' so the re-configured Se-tenant Blocks are unique. Overall, four sets are included. Originating from a limited edition booklet, there are neat staple indents at the left edge.