Rare vintage 60s olive green belted coat

Fabulous vintage lightweight coat in olive green with contrasting white stitching by Cos Cob. Mandarin collar. Bronze-coloured metal zipper up the front. Front patch pockets with zippered closures. All the zippers have funky circular pulls. Sleeve loops at cuffs with chunky bronze buttons. Removable belt with bronze buckle. Durable poly / cotton blend. In excellent vintage condition. Vintage size 12 fits like a modern small so I’ve marked it as such. The belt is almost like an XS. Measures approx: 20.5” across chest 19.5” across waist (unbelted) 22” across hem 36” long 23” long sleeves (from shoulder seam) Belt is 33” long (total length) and when done up ranges from ~28.5”-32” around. When it is on the loosest hole, the end of the buckle doesn’t really “tuck in” to the buckle - see last photo