unused Block of Four  $1 on 96c. black variety Chinese handstamp inverted in a lower right corner block of four showing the current number "14"; some gum browning, nevertheless an extraordinary positional multiple, probably unique. Yang 51c. Photo
unused Block of Four $1 on 96c. black variety Chinese handstamp inverted in a lower right corner block of four showing the current number "14"; some gum browning, nevertheless an extraordinary positional multiple, probably unique. Yang 51c. Photo

Details
unused Block of Four $1 on 96c. black variety Chinese handstamp inverted in a lower right corner block of four showing the current number "14"; some gum browning, nevertheless an extraordinary positional multiple, probably unique. Yang 51c. Photo
Literature
Queen Victoria Postal Adhesives, Richard Guervitch (illustrated)