Botany 500 Sage Allen Classic Navy Blazer 42R?

This classic navy men’s blazer is in GUC. It no longer has the size/fabric content tag, but other blazers that I got from the same gentleman are all size 42R. Please check listed measurements to help ensure an accurate fit. This feels to be wool or a wool blend. It has silver tone monogrammed buttons (they look gold tone in photos, but are very silvery in reality). Perfect for any formal occasion or it could be paired with jeans to dress it down a bit. Approx measurements: 21” armpit to armpit 24” sleeve length from shoulder seam 31” length