Copper follis of Licinius I, app. 313-320 CE. Obverse: laur. hd., VAL LICINIVS PF AUG Reverse: Jupiter holding thundebolt, IOVI CONSERVATORI AUGG, value S (1/200?) Mint: Thessalonica. PS. I can't upload any pics on CT for some reason. I get "There was a problem uploading your file."
The S is not a value but a Greek numeral (6) of which workshop within the mint made that coin. You will find the same coin with other shop numbers. Compare http://www.acsearch.info/search.html?id=1929664 2 http://www.acsearch.info/search.html?id=8081 4 http://www.acsearch.info/search.html?id=74498 1 Various mints in various times used different methods of workshop numbering but most coins of this period have it in one way or another.