Okla. Stat. tit. 60, § 60-1008: Limitations on use of coordinates - Prior recordations -

Nonconformity with System.

A. The use of the "Oklahoma Coordinate System of 1927 North

Zone", or the term "Oklahoma Coordinate System of 1927 South Zone"

or "Oklahoma Coordinate System of 1983 North Zone" or "Oklahoma

Coordinate System of 1983 South Zone" or "Oklahoma Plane Coordinate

System" (OKPCS) on any map, report of survey, or other document

shall be limited to coordinates based on the Oklahoma Coordinate

System as defined in this act.

B. Any legal description prepared prior to the most recent

system of plane coordinates established by the National Geodetic

Survey (NGS) or its successor, or any continual use of legal

descriptions prepared pursuant to the provisions of this act which

have been recorded or filed in official records within the State of

Oklahoma, shall not be affected by this section.

C. Nonconformity with the Oklahoma Coordinate System

established by this act shall not invalidate any deed, map, plat,

survey, description or other document which is otherwise proper.