Andersen Perma-Shield Gliding Door Key lock 1999 - Present.  
Replaces products manufactured 1987 to present.
Andersen Window Newbury lock assembly with keys for Right hand in H.P. Brass.

Key way: Schlage 6 Pin SC4, 2 keys.
Rekeyable: Yes, Schlage key
Handed: YES, Right-Handed - handing is determined by which door slides as viewed from outside.
Lock assembly is Right hand as viewed from exterior side of door.
Color: High Performance Polished Brass
Service Years: products manufactured 1994 to present.
Material: Solid Brass
Priced and sold each.
H.P. Brass patio door hardware features a ten-year limited warranty on the finish to provide years of enjoyment.

Works With:
200 Series Narroline Gliding
200 Series Perma-Shield Gliding
400 Series Frenchwood Gliding

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2573073 - Andersen Window Newbury lock assembly with keys for Left Hand - Satin Nickel
2573074 - Andersen Window Newbury lock assembly with keys for Left Hand - Oil Rubbed Bronze
2573075 - Andersen Window Newbury lock assembly with keys for Left Hand - Brushed Chrome
2573081 - Andersen Window Newbury lock assembly with keys for Right Hand - Antique Brass
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2573083​​​​​​​ - Andersen Window Newbury lock assembly with keys for Right Hand - Satin Nickel
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Article:
How to Change the Handing on an Andersen Exterior Keyed Lock
Article:
How to Replace a Sheared Tailpiece Receiver in a Lock on an Andersen Sliding Patio Door