CREATE TABLE table_204_30 (id DECIMAL, "year built" TEXT, "works number" DECIMAL, "wheel arr." TEXT, "gauge" TEXT, "original owner" TEXT, "name" TEXT, "current location" TEXT, "notes" TEXT)

aside from 316 , what was the other works number used in 1883 ?
SELECT "works number" FROM table_204_30 WHERE "works number" <> 316 AND "year built" = 1883
SELECT "works number" FROM "table_204_30" WHERE "works number" <> 316 AND "year built" = 1883