Nice find on the pic! However, notice that those bodies are square-bodied! The one I have is round-bodied and further milled. The Centerflag milling is in different spots, etc. I've seen 2-3 others of the one you just linked, but never another roundbody one!
Hell, I've been searching for 2 hours trying to find.info and I've gotten absolutely nowhere. I saw you posted on custom cockers and got zilch. I dunno, another one of life's unknown mysteries I guess. Lol