NOS Egress and Entry lock, has over ride core installed and includes a user key and a Control key, both cut from a standard key blank.
As of listing this, the cheapest one with the over ride listed on ebay was $1063.00 without the core and keys, Amazon was $1140.00 without the core and keys. These do not come from the manufacture with the over ride core so mine will save you $75.00 or more.