I recently acquired this totally unmarked smock. After seeing a somewhat similar item on ebay, I now wonder if it's NZ. It has a slightly stiff feel as if impregnated, a bit like a waxed jacket but I don't think it is waxed. The lining is greeny-grey cotton gaberdine. There are no marks on it anywhere, the press studs are plain and I can find no signs there has never been a label. The heavy brass zip is marked MIT. The zip backing is cotton not nylon. There is one inside pocket up high on the left and a poacher pocket in the back. The quality of materials used for jacket and liner is good, and the construction is very neat and professional.
I'd be grateful for any opinions on this. Here's the ebay link: