Unknown Jack and Jill

Hello All. I am trying to figure out these Jack and Jill hard plastic dolls. There are no markings production or otherwise. The dolls have rotation moveable limbs up/down head left/right. Also my mom has had this set as far back as I can remember and I am 54 born in 1965 and remember my mom saying she had it long before I arrived. I have searched many sites and images without luck. So either I have an actual 1 of a kind rare or can get help in finding the reality of what I have here.