What does L represent? When did it form?

As a numeral, L stands for fifty in the English, as in the Latin language. The letter l probably started as a picture sign of an ox goad, as in a very early Semitic writing used about 1500 bce on the Sinai Peninsula (1). A similar sign (2), denoting a peasant's crook, is found in earlier Egyptian hieroglyphic writing.

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The letter l probably started as a picture sign of an ox goad, as in a very early Semitic writing used about 1500 bce on the Sinai Peninsula (1). A similar sign (2), denoting a peasant's crook, is found in earlier Egyptian hieroglyphic writing.

Explanation: