Please combine only the editions edited by C.I. Scofield here - the 1909 Scofield Reference Bible and its 1917 revision. These can be a little difficult to identify because it's now in the public domain and reprinted by a lot of presses other than Oxford, often with words like "Original" or "Old" in the title. If it's not for the KJV translation, it isn't this one.
The "New Scofield Reference Bible" is a 1967 (and hence in copyright) revision by an editorial committee chaired by E. Schuyler English. It's reprinted under the title "The Oxford Scofield Study Bible". It's a different work, available for at least 4 translations - KJV, NASB, NIV and NKJV.
The "Scofield Study Bible III" is yet a third work, a 2003 revision, again by Oxford, available in quite a lot of Bible translations.