What is the most mintage with common eider as the theme, and the year less than 2008?
CREATE TABLE "specimen_set_editions" (
  "year" real,
  "theme" text,
  "artist" text,
  "mintage" real,
  "issue_price" text
);
SELECT MAX("mintage") FROM "specimen_set_editions" WHERE "theme"='common eider' AND "year"<2008;