Physical description
Strip of aluminium cut and punched with three location holes or sections along the top edge - "Z3 Side Destination - Example Flip Piece". Z3's entered service in 1979.
See Reg Item 3704i5 for an actual sample and 3704i4 for the destination equipment.
Inscriptions & markings
"Z3 Side Destination - Example Flip Piece" written in felt tip pin.