Ohhhh dear, my images are all skew-if again, sorry. Again they will be larger and the right way round if you click on them. Sorry they're not very highly defined. I can try and get a better picture of the markings on the base later, but you may be able to get the idea anyway. The MW is really just a zigzag squiggle.
Been trying to find out about Louis Coustaury, but all I can find is a date of death at 1897. Would it be usual for a sculpter to leave a piece unsigned?