Docklands Light Railway tickets started with the new operation in 1987 (I was there!). In turn they were also replaced from September 2008 by the current DLR Shere machines which use cards with rounded corners.
Crossharbour CRO03 - Docklands Light Railway ticket - London DLR
Crossharbour CRO01 - Docklands Light Railway ticket - London DLR
Crossharbour 15 - Docklands Light Railway ticket - London UTS type
Crossharbour CRO15 - Docklands Light Railway ticket - London UTS type (pre-1996)
Crossharbour CRO02 - Docklands Light Railway ticket - London DLR
Crossharbour CRO01 - Docklands Light Railway Schlumberger ticket London DLR 2001