CREATE TABLE table_62450 ("Class" CLOB, "Number ( s ) " CLOB, "Quantity" CLOB, "Year ( s )  of Manufacture" CLOB, "Type" CLOB)

What number was manufactured 1 in 1841?
SELECT "Number(s)" FROM table_62450 WHERE "Quantity" = '1' AND "Year(s) of Manufacture" = '1841'
SELECT "Number(s)" FROM "table_62450" WHERE "Quantity" = '1' AND "Year(s) of Manufacture" = '1841'