2008 Aviation - unique Se-tenant Block of the set in Mini Sheet format

For the 2008 Aviation issue, an exclusive 'Se-tenant Block 4' of the set was released in a Miniature Sheet format in a limited edition booklet. The regular-issue 50c stamps were released in a 'Se-tenant Strip 3' with the $2 Airbus as a 'Single', so the Se-tenant Block 4 set is unique as well as, a regular miniature sheet was not issued for this series.