CREATE TABLE table_name_51 (week VARCHAR, date VARCHAR, attendance VARCHAR)

On what week were there 26,243 in attendance on September 21, 1969?
SELECT COUNT(week) FROM table_name_51 WHERE date = "september 21, 1969" AND attendance < 26 OFFSET 243
SELECT COUNT("week") FROM "table_name_51" WHERE "attendance" < 26 AND "date" = "september 21, 1969" OFFSET 243