Women dancing ‘The Tango’ one of a set of early 20th century postcards, 1913?

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Ray Batchelor writes:
“The artwork for this postcard is by Luiz Usabal Y Hernandez.

Downloaded from a website, Tuck DB Postcards, dedicated to selling [reproductions?] of postcards from the London-based Postcard Producer, Raphael Tuck and Sons. On the website, it says this is one of a set of 6 cards. The other five show conventional man-woman pairings:

Set Title:    THE "TANGO" SERIES III
Set Comment
CONNOISSEUR, PROCESSED IN GERMANY
Sold As:    set of 6 cards
Where Sold:    United States of America

The suspicion that this – like many other, similar historical postcards falls into the voyeuristist, straight eroticism category referred to in the wikipedia article https://en.wikipedia.org/wiki/Queer_Tango [18 Feb 2016] is never far away. Maybe 1913?”

What do you belive the copyright status of this image to be?
Ray Batchelor believes: “The image is out of copyright.”

The image url:
http://www.tuckdb.org/pictures/31084