CLIFTON/BRISTOL SQUARED CIRCLE IN RED. 1881 envelope Southport to Bristol with ½d pale-green (SG165) and 1d POSTAL FISCAL tied neat SOUTHPORT duplex OC 2 81 and on reverse good strike CLIFTON/BRISTOL squared circle in RED OC 3 81. Very rare and the first such example we have seen. Ex-Cohen. (Ref 90174).