Lincoln Service Parts 1 › Lincoln Electric 9SG7543 UI CASE BACK G7543 Lincoln Electric 9SG7543 UI CASE BACK G7543 Sale Price: $183.83 Original Price: $211.40 UI CASE BACK PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! UI CASE BACK PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1