Just take a sewing needle or pin and hold it with pliers, heat the tip red hot or as close as you can and in a spot that can`t be easily seen try to stick the red hot needle into the object. Obviously it would not penetrate stone, pottery ect but if the item is a molded epoxy type or a similar type it will melt and penetrate !! I have seen a few items similar to the plaque that are resin. Can`t tell much from the front but thats what the back looked like to me !! Hope not but doesn`t hurt to check !!