This is a very fancy Victorian sash lock with an unusual pattern. Lots of detailing but I especially like the daisy in the center and the row of leaves along the grip spine. Be sure and enlarge the photos to see everything! Made of strong cast iron there is a patent date of May 29, 1888 on the bottom of the lock.
To see how it functions, go to
WL1014Lock measures 2-1/4” wide x 1-1/4” deep (maximum dimension)
Catch measures 2-1/4” wide x 5/8” deep (maximum dimension)