Y1685. 20p brt green block x 12 with stunning imperforate error. Unmounted mint
20p brt green block x 12. Perfs finish half way through 5th row, 6th row completely imperforate. Fine and fresh unmounted mint, folded between two variety pairs. 20p brt green block x 12 with stunning imperforate error. Unmounted mint" is in sale since Tuesday, April 30, 2019. This item is in the category "Stamps\Great Britain\Elizabeth II\Machin Definitives". The seller is "wickham_stamps" and is located in Bromley. This item can be shipped worldwide.