What was the mintage having an issue price of $1,099.99, artist being Pamela Stagg?
CREATE TABLE table_54147 (
    "Year" real,
    "Artist" text,
    "Composition" text,
    "Mintage" real,
    "Issue Price" text
)
SELECT AVG("Mintage") FROM table_54147 WHERE "Issue Price" = '$1,099.99' AND "Artist" = 'pamela stagg'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What was the mintage having an issue price of $1,099.99, artist being Pamela Stagg? ### Input: CREATE TABLE table_54147 (
    "Year" real,
    "Artist" text,
    "Composition" text,
    "Mintage" real,
    "Issue Price" text
) ### Response: SELECT AVG("Mintage") FROM table_54147 WHERE "Issue Price" = '$1,099.99' AND "Artist" = 'pamela stagg'