As promised I have dug out most of my hand flour grinder. Possibly the last time I used it was when teaching bread making with a small group of children at our local community school 4 or 5 years ago.
The labels on it are CORONA; A6 LANDERS, CIA & MORA. S.A.
On the face of the stone disc it reads – PATENTED McCAMMON IDAHO 83250 RETSEL CORPORATION.
I sincerely hope this helps AlaskaZen, you may have just motivated me to get hold of some rye grain to add it to the stoneground wheat that I have been making the occasional loaf with of late.