old print or water colour?

I was gifted this picture about 25 years ago by a friend in her 70s she told me iy belonged to her mother who would probably have been in her 100s then. i took it off the wall the other day and took the back from it. it is signed at the bottom right hand corner W.H.Margetson. when looked through a magnifier it looks like red dots so i really dont know if this is a print or not.ive looked at the artists other prints but cannot find this 1 anywhere on the net? also on the brown paper backing it has a verse written in pencil :Come unto me you weary ?a bit worn so it might say something a bit different.I do not know if this is what the picture is called. Any ideas on it all would be very grateful.I thas the old type nails rusty now with age. and the backing is like layers of thick board.