Schlage E Series Handleset 605 New Latch and Tailpiece
Schlage E Series entry function handleset. I have two available for sale. These locks are no longer available from Schlage.  A direct replacement of these units is $1500.00. The door must have an oval cut in order for these units to work properly. They are a commercial grade lockset. Locksets will come with two keys per unit.  
Specs can be found below: 
For fine residential doors door range standard 1 3/8'' to 2 1/4''  
This unit comes with a brand new 2 3/8" latch 
comes standard with 2 3/8 backset. 2 3/4 available for an upcharge.  
mechanism made from cold rolled steel 
Entry lock: unlocked by key from outside E51PD. Waverly style E Series design.