So, the odd thing also is the EL only had (2) S-4’s, 526 & 529. I believe the stacks were positioned different. If Lionel is calling your 513 an S-4, it is incorrect for that number. 
513 falls in the S-2 line – up between 500 and 525. 
Erie Lackawanna Memories, The Final Years by Preston Cook, page 126. 
Some units had the red band while the later units went toward the maroon. Seems there is a mixed fleet depending on when and where the unit was painted. The Lionel red band is correct for S units. The yellow sills can be yellow or golden from age. I make all bright yellow items golden by applying orange and brown powders coated with clear flat.
