Table: royal_canadian_mint_coins_15
Columns: year
theme
artist
composition
mintage
issue_price

Question: Which artist has a Mintage of 500?
SQL: SELECT "artist" FROM royal_canadian_mint_coins_15 WHERE "mintage" = 500

Question: Which Artist has an Issue Price of $1,541.95?
SQL: SELECT "artist" FROM royal_canadian_mint_coins_15 WHERE "issue_price" = '$1,541.95'