Lincoln Service Parts 1 › Lincoln Electric 9SM12390-55 TRANSFORMER ASBLY M12390-55 Lincoln Electric 9SM12390-55 TRANSFORMER ASBLY M12390-55 Sale Price: $480.26 Original Price: $552.30 TRANSFORMER ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! TRANSFORMER ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1