孫中山像倫敦版20圓(新票原膠未貼)顯示"图案疊印"的罕見異體. 只發現數枚而已!!!! 有證書.
London printing Sun Yat-Sen $20 mint never hinged stamp shows the rarely seen DESIGN variety of HEAVY DOUBLE TRANSFER; with CHEN'S CERTIFICATE states that " It is GENUINE, with uneven perforations at the right ".
Handful copies known so far and a great RARITY missing from almost all China CNC collections.