Well! I finally got my hands on them, and I'm gobsmacked! The lenses are in very good condition with no cracks or chips an even very few micro scratches on the lenses, either ocular or objective. The eye cups are excellent as well. They adjust as they should and the filters work just fine with good positive click into position. There are no graduations on the reticle so I doubt they were artillery or infantry use, but what do I know? My brother speculates that they were perhaps naval glasses. There is no date on them and oddly enough, no military acceptance stamp that I can see, but I don't know if that's unusual. Could these have been made for the civilian market? Here are some pics I took today, so enjoy.