Black Cast Iron Lever Handle - LOCK or LATCH
 
LATCH
Latch Plate (4 1/2" x 1 1/2") 114 x 38mm
Spindle and screws included.

LOCK
Lock Plate (5 1/2" x 1 1/2") 140 x 38mm
Spindle and screws included.
Please note the picture shows the latch handle.  The lock handle is on a longer plate and incorporates a key hole in the design