One for a Batavia Automatic Rifle showed up about 2 weeks ago -
Thread on Batavia magazine - it's already been sold on GunBroker. It was the only one I have ever seen for sale on-line in many years of looking. Several years ago another member here was looking for one and had no luck. Unfortunately I think you may have some competition if one does come up for sale. I am still looking for one for a Febiger, it would be a little different than the one pictured. Welcome to the forum, I recognize you (and your question) from RimFireCentral.