Here is a very nice unused boy's overcoat pattern from 1919. Imagine, over 100 years old, never used and still in the factory wrap.  Even the graphic of the envelope are neat of a boy with lasso ready to do some roping. 

The pattern is a Butterick  number 3885, size 7.  The coat is  a belted style with raglan sleeves,  convertible collar and box pleat at the back.  Four views are printed on the front of envelope. 

Just about as minty as you can get without being new.  Inside pattern pieces are still folded in the tissue factory wrap and I wasn't about to disturb. 

Back of the envelope is printed with the each pattern piece.