New in box Walker muffler part#840 later renumbered to 21107 to fit 1957-8 Oldsmobile all models with single exhaust. Muffler was boxed in the early 1960's and opened for the first time for the photos of the actual muffler. Aside from spots of light surface rust on the steel shell ,looks like the day it was made!  WYSIWYG! Thanx