Teniers the Much Younger

One has to wonder, when one encounters copies after recently found originals, or things recently for sale, and the like, whether the ones for sale now are also old copies or new forgeries trying to imitate old copies? Making a poor "after Teniers" copy is obviously much easier than making a fake Teniers, and no one will bother doing any serious tests (like dendrochronology) to test whether it is really an old painting or not...

As an example, of which I don't know whether it is old or not, but where I have my doubts: Fairfield Auctions LLC sells a "Flemish School, 18th century" tavern scene, estimated at $500 to $750. Ticks all the right boxes for a Teniers copy, but for the fact that it has bright colours instead of some murky brown, but that's surely a plus?

The back of the painting is a mess, but surely something that has survived 300 years or so should look like that? Even though it looks like the match between the frame and the painting has only been made very recently, that doesn't mean that the painting can't be old?

On ArtValue, I found a "similar" painting "after Teniers" that sold for 1,500 Euro at Artcurial in 2012. And now we have for sale an image that is completely identical in every detail, but for the second smoker on the left, and the one entering on the right. There is one slight problem with the person entering the pub on the right; he is entering through the fireplace ;-) If you are not sure about this, then check this other Teniers copy, sold at Christie's, which shows the exact same fireplace but now completely.

So, is the one for sale a recent fake? I have no evidence, and I haven't actually handled the painting, but I would be very, very wary of buying such a thing.