Possible Double-Reverse 1979 Susan B. Anthony Dollar - 8.026 G - No Obvious Seam

Hello everyone,

I recently found what appears to be a 1979 Susan B. Anthony dollar with an eagle reverse on both sides. It was mixed in with several ordinary Susan B. Anthony dollars in a friend's loose coin container. It wasn't purchased as a novelty or Magician's coin as far as I know.

Here are the details:
Date: 1979
Weight: 8.026 grams
Diameter: Appears normal (I'll measure if requested.)
Thickness: Appears normal compared to other SBA dollars.
Edge: Reeded and appears continuous. I've inspected it closely and have not found an obvious seam.
Composition: Appears identical to a normal SBA dollar.
Both sides: Eagle reverse design (two reverses/no Susan B. Anthony portrait).

I've attached photos of:
Both sides of the coin.
The edge.
The weight on a digital scale.

My understanding is that no authenticated double-reverse Susan B. Anthony dollars are documented, so I'm trying to determine whether this is:
•A professionally made two-tailed/magician's coin,
•A privately altered coin, or
•Something that warrants professional authentication.

I'd appreciate opinions from those experienced with mint errors and altered coins. If additional photos or tests would help, I'm happy to provide them.
Thank you!


*** Edited by Staff to crop and/or rotate images. In the future, please crop and correctly orient images before uploading. ***

First two lines of the Upload Form