From which specific absolutely pure, perfect copies of Scripture was KJV translated?

KJV-only author Al Lacy asserted: "From God's pure manuscripts came the AV1611" (Can I Trust My Bible, p. 18).

KJV-only author David W. Daniels claimed that the KJV “was accurately translated from perfect copies of God’s words” (BattleC ry, Sept/Oct., 2007, p. 11).

KJV-only pastor Raymond Blainton asserted: “It is essential, however, that the manuscripts to be translated are indeed the inspired words of God” (The Perilous Times, June, 2000, p. 5).

KJV-only author H. Wayne Williams asserted: "There are many infallible manuscripts such as the Majority Text and the Textus Receptus to verify the preserved Scripture" (Does God Have a Controversy, p. 21).

KJV-only author E. W. Whitten claimed: “The manuscripts from which the translations are made must first be true and accurate” (Truth, p. 127).

KJV-only author Joe Gresham maintained that “no translation of the Bible is any better than the manuscripts from which it is translated” and that “if a person has a Bible translated from corrupted manuscripts, they have a corrupted Bible“ (Dealing, p. 28).

KJV-only advocate John Phillips claimed: "The King James translators did not use a 'choose and reject' system; that is, take manuscripts or texts which contained both good and bad" (The King James Contender, April, 1980, p. 2).

John Cereghin, a defender of the KJV, admitted: "If the Greek is faulty, how can the English, which is translated from that Greek, be pure?" (MBBC Swordsman, Winter, 1994, p. 7).

John Cereghin wrote: "If these Greek and Hebrew manuscripts are corrupt, then the Authorized Version must also be corrupt" (Maranatha Baptist Watchman, May, 1998,

KJV-only advocate Kent Rabe declared: "A corrupt text cannot produce a good Bible, and a good text cannot produce a bad Bible" (Double Exposure, p. 14).

In his commentary on the Psalms, Peter Ruckman wrote: “A pure Bible couldn’t come from an impure source” (II, p. 979).

Was the KJV a revision of perfect, pure pre-1611 English Bibles?

From which specific, absolutely pure, perfect, infallible copies of Scripture was the 1611 KJV translated if it was actually translated from such copies?