THE SMART TRICK OF BUD NAKED FLOWER THAT NO ONE IS DISCUSSING

The shape of Latin S arises from Greek Σ by dropping 1 out of your four strokes of that letter. The (angular) S-form made up of a few strokes existed like a variant of your four-stroke letter Σ now while in the epigraphy of Western Greek alphabets, along with the a few and 4 strokes variants existed alongside one another while in the classical Et