Ted,
At my age, when I hear of an "Asian colonel's" name carved into the stock, I naturally think French Indo China, and within it, Viet Nam. I remember during the 60s, large importers( Ye Olde Hunter?, Century Arms?)brought in hundreds, if not thousands of double barrel 16ga shotguns that had belonged to the French Forces when they lost their colonies. I don't remember seeing Darnes advertised, but I suspect there would have been some. Maybe they were separated out and disposed of a different way for a better price.
Mike