This is a vintage pattern and “Deltor” instruction sheet for a “Ladies’ and Misses’ Circular Cape”, Butterick design #4287, bust size 40.  The contents are complete (6 pieces) with original instructions.  It is in very good condition with intact envelope (some creasing) and clean contents, well cut and folded.  The copyrights on the envelope back range from 1916 to 1919, might be an early 1920s piece.  My understanding is that you can make sizes other than what is specified on the pattern using a certain procedure for alteration.  Please check my other listings for other patterns - this is a wonderful pattern!