I'm still struggling to get a good picture, I'll keep trying. The glass looks old, the basehas scratches. In the lid, underneath the nude, there are sort of wave marks in the glass. The glass is quite thick, and at the front, where her head 9is, there is a thin mould line running across the top of her head and down both shoulders, terminating at each corner of the frosted portion. The glass of the box base is slightly thicker on one side than the other. It has a couple of nibbles on two underside corners of the base.
How much are the reproductions? Just hoping I've paid less than it's worth if it turns out to be a copy!
From the mark, it seems to be 1930, or pretending to be.
Thanks for your help, it's nice to find others who love glass!