A superb UNMOUNTED MINT " No Control cylinder 1 no dot " control block of 6 with perf type 6 I/P. A superb UNMOUNTED MINT No Control cy B33176" is in sale since Thursday, March 7, 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.