The stub entry reads: Series: S108092 Reel: 0111 Frame: 00345 ignore: 000 Date: 1776 C. or later Description: NEWMAN, SAMUEL, ACCOUNT AUDITED (FILE NO. 5502) OF CLAIMS GROWING OUT OF THE AMERICAN REVOLUTION. Names indexed: NEWMAN, SAMUEL
I have not ordered copies so I do not know what his exact service was.
The disparity in his death death maybe from a transcription error. Samuel's will transcript, available at the SC Archives online site, has his will dated "Twenfth Day of November in the year of our Lord one thousand seven hundred and seventy" and a statement by the witnesses dated 1779. But on one web site a research that apparently has seen a copy of the original made the comment that the witness statement date could be read as either 1771 or 1779. Unfortunately, I have not found a copy of the handwritten will and probate records posted on the internet and have not ordered copies of them.
If as seems possible Samuel Newman born in 1713, died between the date of his will and the possible date of 1771 that the witness statement was signed, then the Samuel Newman who provided Rev. War assistance reflected in the stub entry could be his son born 1731.There are a lot of entries in the SC Archives in Newberry and Berkley Counties, SC, for a Samuel Newman even after 1779, and it seems very possible that is his son.
There is also a record in Roster of South Carolina Patriots in the American Revolution, Bobby Gilmer Ross, 1994, Genealogical Publishing Co.: Newman, Samuel: He serves twenty days in the militia during 1782. A.A.5502; Y143. This seems to refer to the same entry as in the SC Archives.