Some specimens of the 28 BSA were made, as far as I know, as well as two other BSA calibers. However, contrary to the drawing, I believe none of them were headstamped. Some replicas were made either in Australia or by Kynamco of England; I have received differing stories on them. I have the .39 BSA Replica. They are headstamped so they won’t be taken for originals, as they are very well done. I wish I had been able to buy all three calibers, but at the time a German dealer had a few of each, I could not afford but one. Evidently, very few of the replicas in each caliber were made, making them very scarce, although in no way as desireable as the originals, of course. I know some people don’t care for replicas, but in some calibers, they are all that anyone can hope to have as a “drawer specimen.” I, personally, like them as long as they are identified as such in some way.