A superb UNMOUNTED MINT " No Control cylinder 17 no dot " control block of 6 with perf type 6 I/P. A superb UNMOUNTED MINT No Control cyl B44720" is in sale since Tuesday, July 2, 2019. This item is in the category "Stamps\Great Britain\George VI". The seller is "bbstampsltd" and is located in Basingstoke. This item can be shipped worldwide.