Question: What number was manufactured 1 in 1841?
SQL: SELECT "Number(s)" FROM "2-17941795-2" WHERE "Quantity" = '1' AND "Year(s) of Manufacture" = '1841';

Question: What is the quantity of class B V?
SQL: SELECT "Quantity" FROM "2-17941795-2" WHERE "Class" = 'B V';

Question: What number corresponds to the quantity of 24?
SQL: SELECT "Number(s)" FROM "2-17941795-2" WHERE "Quantity" = '24';