Original Russian Madonna Child Painted Egg Folk Art 3.75”T Signed Religious

This auction is for a traditional Russian Folk Art painting of a religious theme, Madonna with child On front & cross on back. Signed on front by artist but writing is illegible to me. Enlarge the photos as there is lots of detail to view:)……measures approximately 3.75”T. I believe it is oil paint but it could be acrylic paint. In excellent preloved condition with a few spots of paint loss on bottom back & a nail (?) that comes out from the bottom. From a smoke free home. All items must be paid within 48 hours of auction end.