The Tai Le script, sometimes called Liek, supposedly has existed since the 1300's, although it is undocumented. It is an alphabet. The Tai Le script has been reformed at least once in the 1900's, although some texts may still be printed using an older orthographic convention for marking the 6 tones used in the language, using Latin diacritical marks over the final letter of the syllable.
The modern Tai Le alphabet contains 30 letters, as well as 5 tone marks (tone-1 is left unmarked). Tai Le is encoded in the Basic Multilingual Plane of Unicode at u1950-u1974.
The Tai Le numerals are similar to Myanmar numerals; they are in fact unified with Myanmar's numerals in Unicode (u1040-u1049) despite some glyph variations.