Someone at Archie Took the Summer of 2013 Off

KC’s been indexing the Archie digests, and he ran across this oddity. Can you tell the difference between these two copies?
The one on the left is B&V Friends Double Digest #233, published June 2013. The one on the right is #234, published August 2013. The contents of each are different, as are the back cover and spine design, but someone really wasn’t paying attention to the cover art.
On ComiXology, #234 has been given a different cover. I have no idea if a reprinted version was ever offered.