Silverline 4000 series concealed internal tilt-in latch set for top sash

Colors: 
Beige
White (Blue White) 

Latch Width: 3/4 inch
Latch Length: 3-1/8 inch

This is a left and right hand set.
Held in place with screws and appears to be reversible.

Priced and sold in pairs.

Note: 503068 & 503078 Look very similar, Please compare yours with pictures.