unused Block of Four LA-MB, an outstanding marginal block of four on bleuté paper with almost full original gum (MB without trace of hinging), showing inscription "Per Sheet. Place the Labels ABOVE" and with very large margins on the other sides; light gum bends, the selvedge with two faintly toned creases but in no way detracting from this superb exhibition piece. B.P.A. Certificate (1996). Photo