The form of Latin S occurs from Greek Σ by dropping just one out of the 4 strokes of that letter. The (angular) S-condition made up of 3 strokes existed for a variant of your 4-stroke letter Σ by now during the epigraphy of Western Greek alphabets, and also the https://connermeshw.theisblog.com/31508673/the-fact-about-bud-naked-kits-that-no-one-is-suggesting