Question: What are the special notes for an issue price under 24.95 with an Edmonton Oilers theme?
SQL: SELECT "Special notes" FROM "2-12991375-10" WHERE "Issue price" < 24.95 AND "Theme" = 'Edmonton Oilers';

Question: What theme has special notes From Calgary Flames Gift Set?
SQL: SELECT "Theme" FROM "2-12991375-10" WHERE "Special notes" = 'From Calgary Flames Gift Set';

Question: What year has an issue price over 15.95, and a special notes from edmonton oilers gift set?
SQL: SELECT COUNT("Year") FROM "2-12991375-10" WHERE "Issue price" > 15.95 AND "Special notes" = 'from edmonton oilers gift set';