Well.....
It appears to be the exact same photo with a slightly different crop. Even the autograph looks exactly the same, just with different placement. Yours is larger,blank backed and doesn't have Clemete's name beneath the photo. It sounds like it may be printed on the same paper stock as the Arco as well. While it is improbable to ever have 100% certainty, I would feel safe to say - it is 100% tied to the Arco issue - possibly a preproduction proof. Possibly the only of its kind. Thanks for sharing it!
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