Awesome example of repurposing! While the tin ceiling tile, which was evidently cut and mitred to form this awesome frame is certainly original and antique, I'm not Scary sure when it was created for its current use, so I'm hesitant to list it as antique. The frame is what I call "perfectly distressed", meaning just small areas of original red paint around the raised edges is worn off, with no assistant rust or oxidation to the exposed metal. Great design for a vintage picture! Please see pics for further description and condition.
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