A superb UNMOUNTED MINT " NO Control cylinder 19 no dot " control block of 6 with perf type 6 I/P. A superb UNMOUNTED MINT NO Control cyl B38147" is in sale since Monday, March 25, 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.