A superb UNMOUNTED MINT " Control Y36 cylinder 143 dot " control block of 6 with perf type 2A P/P. A superb UNMOUNTED MINT Control Y36 cyli B52561" is in sale since Monday, April 19, 2021. This item is in the category "Stamps\Great Britain\George V". The seller is "bbstampsltd" and is located in Basingstoke. This item can be shipped worldwide.