Lincoln Service Parts 1 › Lincoln Electric 9SM12390-73 TRANSFORMER ASBLY M12390-73 Lincoln Electric 9SM12390-73 TRANSFORMER ASBLY M12390-73 Sale Price: $522.78 Original Price: $601.20 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