Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: 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?

### Accurate SQL ###

SELECT value FROM table_name_1 WHERE first_issued < 1998 AND reverse = "guitar of agustín pío barrios"