Germaine Monteil
I know nothing about this French company, other than they manufacture cosmetics, so if anyone can help me out, I would be most grateful.  
This tiny compact held a godet of pressed powder.  It has a goldtone ribbed back and the lid is faux mother-of-pearl  with a cut-out flower design.  It measures only 1" square.
A very modern compact holding solid powder, made in brown plastic with the GM initials worked in a flourish at the centre.