John, I enjoy and appreciate your photos and description. Would it be accurate to call the "little brass washer" a counterbored and knurled brass escutcheon? I pictured something entirely different from your description.
It is easy to see the similarities of the grip caps, escutcheons and checkering.
Thanks, Steven

Last edited by SDH-MT; 03/08/15 02:13 AM. Reason: edit