Man I hate the latest update to iOS. It used to be easy to email photos to myself so I could reduce their sizes. Ow I have a couple hoops to jump through.
the mirror could use a recoat, but it’s not bad at all
there was actual mud on the mirror, but I washed it off. It was apparently purchased from telescopics as a kit. It’s a cast Pyrex blank with the step around the rim back side. Not a raised rim like my later Pyrex mirrors. There were a couple names engraved in the back, and f/7. But the names are scratched out. One is either Douglass or Donald Allen. The other is harder to read, but looks like Daniel burrell or something similar.
around the edge is
“Refigured by Cave Optical Co” in script lettering, and
R672789 f/6.8 68 1/4” F.L. July 25, 1967
tim