What was the mintage having an issue price of $1,099.99, artist being Pamela Stagg?
CREATE TABLE "provincial_flowers" (
  "year" real,
  "artist" text,
  "composition" text,
  "mintage" real,
  "issue_price" text
);
SELECT AVG("mintage") FROM "provincial_flowers" WHERE "issue_price"='$1,099.99' AND "artist"='pamela stagg';