Vintage Virgin Mary Queen of Heaven Religious Wall Shield Medal

Vintage Virgin Mary wall shield medal- marked ACH on the back. I am not familiar with these types of medals, but from online research I have found that these types of medals were sold at a Polish shrine and are made to be hung in a child's room. It is a lovely- sweet medal that measures approximately 1 & 9/16ths of an inch tall by 1 & 1/4ths inches wide at the widest point.