CREATE TABLE table_68870 ("BR/SR No." TEXT, "SR Name" TEXT, "LSWR No." FLOAT, "Builder" TEXT, "Built" FLOAT, "To IoW" FLOAT, "Withdrawn" FLOAT)

What is the number for year built of W27 that was withdrawn in 1967 with a To LoW year earlier than 1926?
SELECT COUNT("Built") FROM table_68870 WHERE "Withdrawn" = '1967' AND "BR/SR No." = 'w27' AND "To IoW" < '1926'
SELECT COUNT("Built") FROM "table_68870" WHERE "BR/SR No." = 'w27' AND "To IoW" < '1926' AND "Withdrawn" = '1967'