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_1 (value VARCHAR, first_issued VARCHAR, reverse VARCHAR)
### Question:
How much was a Reverse of guitar of agustín pío barrios before 1998?
### Answer:
SELECT value FROM table_name_1 WHERE first_issued < 1998 AND reverse = "guitar of agustín pío barrios"