Only just today did I get he wire wheel out and discover that anotherAtha has made it to my shop. Have no idea what this thing does, but other than the Atha stamping, there's a "1/8" on one side. There was another piece with no markigs on it except a "3/4" in the same box from the auction, but it doesn't really look like the Atha piece. If we figure out what the first one does, I'll put up a photo of the 2nd one. With that mushroomed head, someone's been wailing on it rather aggressively over the years.
TIA
DM&FS