VTG BALLANTYNE Men's Diamond Crewneck Sweater Size Large?

Vintage Ballantyne Men's Diamond Crewneck Sweater Size Large? Here is a fantastic men's vintage crewneck sweater by Ballantyne.  there is no material tag, but it measures out to be about a size large. Please see the detailed measurements below.  It is in very good pre-owned vintage condition with some normal signs of wear.  There is also no material tag.  This brand seems to mostly be either cashmere or wool.  I do not know if they ever blend synthetics with their natural fibers. Care for this garment can be done by hand wash.  The body of the sweater is heather gray.   Across the chest is a diamond pattern of green, light and dark mustard yellow.  The frame around the diamond pattern is black.  The right sleeve is light mustard with the word "Original" in black.  The left sleeve is a darker mustard with "Ballantyne" in black.  Both sleeves have stripes near the cuff using the same mustards, green, and black colors as the rest of the sweater.  It measures out to be a size large, but please pay more attention to the following measurements (in inches): All measurements taken with the sweater lying on a flat surface. Chest (taken by measuring underarm to underarm) - 22 Waist - 21 1/2 Shoulders (seam to seam) - 22 Sleeve (taken from shoulder to end of cuff) - 19 1/2 Front Length (taken from the top of the shoulder straight down) -  26 Back Length (taken from the top of the collar in the middle of the sweater straight down) - 25 1/2