The copies made by the register shall be faithfully collated by the register and deputy register, both of whom shall, at the end of each book of transcript, by a joint certificate, certify that they have carefully collated the same with the original record book, and that it contains a full, true, and complete copy or transcript of the record in the original book; and in case any part of the original record is destroyed or mutilated so that the same cannot be ascertained, they shall add to their certificate the words, “so far as the same can be ascertained from its burned or mutilated condition,” and the transcript shall be as effectual and valid to all intents and purposes as the original record, except as is provided in §§10-7-116 and10-7-118.