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Found this at a site in west central Indiana, USA that turns up items that date to early 1800s-early 1900s. Any ideas? I included a front and back image and also an image of a tiny hinge on the back and a tiny loop (makes me think something would’ve clipped into this loop when it closed using...

Any value to this? Vintage electroplate 2-sided picture frame. ~ 4.5" X 3.5" Marked: " J&B 24 K Gold Electroplate "