What does a blue crescent mark mean on Worcester porcelain?

The blue crescent mark is widely associated with the First Worcester Period, often called the Dr. Wall period, which refers to the years up to 1783, when ownership changed. References often show the crescent on mid-18th century wares, and collectors consider it an important mark of early Worcester production. However, marks can be forged or misread, so take the crescent as a clue rather than a definitive verdict. Make sure the paste, glaze, and style of decoration are consistent with the period: many original early wares show Chinese-inspired motifs, blue underglaze work, and 18th-century handle and foot shapes. When evaluating items, expert opinion and comparison with museum examples can help avoid costly mistakes.