Antique or Vintage Sacred Heart of Jesus Belt Buckle Brass? Southwestern or Mexican?

Hi - I found this belt buckle amongst a large estate in an abandoned storage unit. The woman was Hispanic and had many Mexican items, many of them of a religious nature. This piece has proven to be a mystery as my research has yielded nothing vaguely similar. The primary art on the buckle (Jesus with the sacred heart image) appears to be cast. The other symbols appear to be cast. They include a leaf, a boxed star, a head in profile, a peace sign and some other symbols I can't make out. I'm including a number of photos in hopes someone can help me identify this.