The form of Latin S arises from Greek Σ by dropping just one out of the 4 strokes of that letter. The (angular) S-condition made up of a few strokes existed to be a variant of your 4-stroke letter Σ now in the epigraphy of Western Greek alphabets, along with https://budnakedexotic13850.xzblogs.com/72446170/detailed-notes-on-s