I don't know if it is any help, but I have 107449. I'm not entirely sure what you mean by mirror other than the back of mine has all for rocket parts indented into the metal. If you need pics, just let me know and I'll take them tomorrow outside in the sunlight - seems to work better than with just a lamp.
Hi Alexei,
Any chance of narrowing down the date for mine S/N 70572? Right now it's somewhere between 69896 - April 5, 1985 and 73806 - February 22, 1988
Sorry I waited until the last minute to try to get photos and with the family gathering today, well...my battery died while I was taking these. I think I have a good one of the reverse, but the face is another story. I give you what I have and try for better shots tomorrow after the battery charges.:o