dougsmit- Thanks for the input. hmmm, maybe the first letter is an "R" but with the legs cut off. But I am pretty sure that the second letter is an "S".
Yes, sorry about the semi-blurry reverse pic. But in hand the mm is not much clearer than in the photo.
Yes, sorry about the semi-blurry reverse pic. But in hand the mm is not much clearer than in the photo.





















