Very desirable glove!
Not only do Ken-Wel gloves have a dedicated following among vintage glove collectors, as do gloves with Hall-of-Fame player endorsements, but the 560 model has a special niche in the evolution of baseball glove design.
The 560 introduced a new-fangled idea that was revolutionary for the times, and didn't really catch on for another few decades- laced together fingers!
So iconic is the design that a modern glove company- Akadema- has reissued this glove as one of their "Hoboken Collection" line of vintage reproductions. You can see it, and their other offerings, here:
Akadema Hoboken Collection Gloves
Another plus is the apparently great condition of the glove, despite the "pulled threads" from the Ken-Wel logo on the label. The overall condition of the glove looks excellent.
Without having a chance to evaluate the glove in-person, and if the interior lining is in a nice shape as the outer leather, I could see this glove easily selling for up to $400, and certainly no less than $250.
Man, I never find anything like this in antique stores around here. For an antique store find, that's a doozy. Or, maybe I should say...a Dazzy!