And here it is:
And compared to a French TAP47/56 F2 pattern:
It's made out of a very dense and rigid HBT material, pretty coarse, the label unfortunately is faded beyond recognition, but it follows most of the features of a TAP56 smock, with the exception of the buttons around the collar for attaching a hood.
The zippers are of an old style and labeled "ailêe".
Most unique of course is the lizard print itself, it has some unique elements. I'm puzzled.
Suggestions and comments welcome.