2018 Vintage Motorcycles - unique Se-tenant Block 4 set in large Mini Sheet format

For the 2018 Vintage Motorcycles issue, an exclusive joined 'Se-tenant Block 4' of the set in a Large Miniature Sheet format was released in a limited edition booklet. The regular-issue stamps were released as 'Singles' so this Se-tenant Block configuration and format of the set is unique. A regular miniature sheet was not released for this issue.