Lincoln Service Parts 1 › Lincoln Electric 9SM27904-1 REAR COVER PLATE M27904-1 Lincoln Electric 9SM27904-1 REAR COVER PLATE M27904-1 Sale Price: $256.95 Original Price: $295.49 REAR COVER PLATE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! REAR COVER PLATE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1