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  1. C

    Chronology of focus wheel styles & eye cup styles?

    When did Swift change from slotted screws on the prism cover to Phillips Head? Did all the Japanese JB's change at the same time? One person said generally 1970, IIRC.
  2. C

    Chronology of focus wheel styles & eye cup styles?

    LOL. Already bugging him about where the heck to buy the key components of a Mark 5 collimator - the 10-12" crappy lens, the tall rhomboid prism, and a design for a clamp that holds like a rock but allows you to get to the screws. He commented that the Mark 5 uses two of those big lenses, but...
  3. C

    Chronology of focus wheel styles & eye cup styles?

    Datapoint: www.birdforum.net/threads/swift-holiday-mark-ii.220939 rdmadison, 2012 POST# 19 Serial number dating is consistent on all my Swifts with makers marks through 1967, regardless of indicated manufacturer. The only possible exception is Swift 765 10x50 Rainier #7-49439 (MOC/B32/E10)...
  4. C

    Chronology of focus wheel styles & eye cup styles?

    Lots of clues, keep it coming :) "I believe the use of prism screws started about 1985 with the introduction of Type 4a, or the 804R." I thought it was about 20 years earlier. So basically, the look of 1960's vs the look of 1980's styles. And the names of new styles starting in the '80's Does...
  5. C

    Chronology of focus wheel styles & eye cup styles?

    Well, I'm primarily interested in figuring out the approx date of manufacture for Swifts. At some point they abandoned eccentric objective mounts & went with prism screws. That's the main difference I want to discern when I see one for sale. I want to find a junker with eccentric mounts so I can...
  6. C

    Chronology of focus wheel styles & eye cup styles?

    So Swift focus wheels had long striped on the axle, fat striped on the axle, wheel in front of the cover... Anybody have a table describing these changes chronologically? Did changes happen at about the same time all across the brand as a style decision?
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