When were 668 units produced?
CREATE TABLE table_1245350_1 (production_period VARCHAR, units_produced VARCHAR)
SELECT production_period FROM table_1245350_1 WHERE units_produced = 668
### Context: CREATE TABLE table_1245350_1 (production_period VARCHAR, units_produced VARCHAR) ### Question: When were 668 units produced? ### Answer: SELECT production_period FROM table_1245350_1 WHERE units_produced = 668