1. The first and most obvious difference is that the clerk made an error in Cullen Smith's grandson's name. Cullen J. Sasser in the original was transcribed as Cullen J. Smith Sasser, with the Smith scratched out. This could lead to some confusion to anyone transcribing the will.
2. The clerk made several changes in capitalization, spacing and punctuation, which may or may not make a difference in the meaning.
3. Cullen Smith mentions his daughter: "And also I and [sic] bequeath to my Daughter Esther who intermarried with Elisha Sasser and the heirs begotten of boddy [sic] the tract of land on which she now lives Containing fifty acres...." The clerk corrected the spelling, but changed the phrase to "on which he now lives."
4. Cullen Smith makes a bequest to his granddaughter Patience A. Sasser; the county clerk wrote grandson, and then lined out "son" and wrote "daughter".
Just these differences in a one-page will make it obvious to anyone to recognize when they're reading a copy of a document, and to realize that there may be errors done in the copying.