A SECRET WEAPON FOR BUD NAKED MUSHROOMS

The shape of Latin S occurs 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 previously in the epigraphy of Western Greek alphabets, and the three and four strokes variants existed along with each other during the classical Etrusca