CREATE TABLE table_47895 ("Issued" TEXT, "Type" TEXT, "Design" TEXT, "Serial format" TEXT, "Serials issued" TEXT)

Which design has a serial format of AB-12-34?
SELECT "Design" FROM table_47895 WHERE "Serial format" = 'ab-12-34'
SELECT "Design" FROM "table_47895" WHERE "Serial format" = 'ab-12-34'