Telescope Reviews: Bausch & Lomb Zephyr 7x35 question?

PG 8641 is engraved on the hinge tension adjusting screw at the front of the hinge of this Rochester Zephyr 9 x 35 individual focus. A tag on it says "1980 value $350-$400". The case is original and black.

I had or have another Rochester 9 x 35 IF , with its box, and a tan cowhide case. A two minute search did not find it. There is a 7 x 35 Rochester somewhere.

Did any of the 10 deg. 7 x 50 fat body wide angle Navy IF Rochester B&L WW II make it to Australia? What about the IF Navy 9 x 63? I took one to NSW and Qld. on an Elderhostel birding trip with my father in 1998. I used it for astronomy, and used a smaller c.f. for the birds, mostly. I saw a hobby falcon, my first one, coming headon at me during a random scan down a forest corridor. Very fast and agile, like a large swift.
I could have had the wide angle 7 x 50 body molds free of charge if I had phoned a few weeks earlier in about 1973. I have microfilm and paper WW II reports on the wide angle 7 x 50 which give complete optical parts radii, spacings, thicknesses , and glass types, as well as program history and personalities. But I have not seen them for a long time.

I heard from a retired, German born archivist, who was involved in the effort to catalog and store the tons of microfilm, just after the war, that the archived films are so deteriorated, for many of the WW II era records, including a massive amount of German industrial records, that they have been placed off limits from the public, and there are no plans, nor funds, to transfer them to a more permanent medium. I did a lot of research in the records in 1967, and again in 1970, and bought some copies. Has anyone been digging in the British Library Annex at Boston Spa, in Yorkshire, where ,I was told, many Kriegsmarine records are stored? I wonder if there are any of the optical data for the various CZ 8 x 60 for the KM? Or for the 20 deg and 80 deg inclined 10 x 80 for KM? Maybe these are in Russia, or still around Jena? I have some incomplete WW II CZ binocular spec and test plans and drawings for 25 x 100, 12 x60, and to other types, which seem to have never reached production. I have plans and design data, including drawings for production tooling, for the KM 8 x 60 by Leitz. It is a Porro II. I have trouble in reading the old style German handwriting. I heard that it was abandoned in the schools shortly after the war.

I worked for Xerox in Rochester in the summer of 1966. I recall a phone conversation with Dr. A. F. Turner at B&L, who was one of the pioneers in antireflection coatings. I visited with Alexander Smakula, the Ukrainian born Zeiss coatings pioneer, at his home near Boston, in the same summer. He was working at MIT.