user: Question: A mintage of 31,997 has what issue price?
Columns: ['Year', 'Theme', 'Artist', 'Mintage', 'Issue Price']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2000.0, 'Steam Buggy', 'John Mardon', '44,367', '$59.95']
SQL:

assistant: SELECT "Issue Price" FROM "Table" WHERE "Mintage" = '31,997';