GB 1911 1d UM Rose-pink Scarce 'Open Top to Leaf' Key Variety

Great Britain 1911 Downey Fresh Unmounted Mint 1d Rose-pink Shade Crown Die IB (Excellent Perfs All Round) with SCARCE KEY VARIETY 'Open Top to Leaf (R. 2/3 of Booklet Pane, No NB3)'. Small Pencil Note Reverse. Comes with 2 used Die IBs for Shade and Variety Comparison. King's Spec N8(8) l - Variety Cat £400 MM (UNPRICED UM) Plus Shade Cat £225 UM. SG 331var