You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Plymouth

Context:
Plymouth has the first known reference to Jews in the South West from Sir Francis Drake's voyages in 1577 to 1580, as his log mentioned "Moses the Jew" – a man from Plymouth. The Plymouth Synagogue is a Listed Grade II* building, built in 1762 and is the oldest Ashkenazi Synagogue in the English speaking world. There are also places of worship for Islam, Bahá'í, Buddhism, Unitarianism, Chinese beliefs and Humanism.

Question:
What is Plymouth Synagogue's listed grade?

Grade II*