Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_75 (mintage INTEGER, artist VARCHAR, year VARCHAR)
### Question:
What was the average mintage for that of artist Celia Godkin, before the year 2010?
### Answer:
SELECT AVG(mintage) FROM table_name_75 WHERE artist = "celia godkin" AND year < 2010