My name is ***** ***** I would be happy to help with your Madonna.
I can't find a record of a 40/1 model number. Do you perhaps mean a 46/1 which looks like this? (Without a halo and 11.5" tall).
I understand. Often the glaze fills the impressed numbers and makes them hard to read.
If she has no halo (like the example I showed you) then it's a 46/1.
Does the mark on the bottom look like this one?
Does the mark look like either of these two?