Vintage MCM Gold Tin Wall Hanging Butterflies Decor Home Interiors 3 Piece Set

1990s with a mid century modern flair gold tin/brass butterfly wall hangings. It is a 3 piece set. They measure 7” x 5”, 5” x 3” and 4.5” x 2.5” from largest to smallest. The bodies are wood. The fronts are nice and shiny but the backs are starting to darken or maybe tarnish? There is an open square on the back to hang. The small one has a tack in it. Not sure how to get it out. I don’t want to break body off. I believe they were sold by home interiors.