CREATE TABLE table_name_53 (series VARCHAR2, release_date VARCHAR2, production_num VARCHAR2)

Which series had a release on 1939-07-15 with the 8863 production number?
SELECT series FROM table_name_53 WHERE release_date = "1939-07-15" AND production_num = "8863"
SELECT "series" FROM "table_name_53" WHERE "1939-07-15" = "release_date" AND "8863" = "production_num"