Looking for information about Busch glaukar 307mm/f9

tbw777

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Purchased a rare lens Busch glaukar 307mm/f9, presumably it's a triplet. Have searched the internet but can't find any information. I have a glaukar 140mm/f3.1 but it is from a different line.
Does anyone know what this is?
What do the numbers 1 and 2 on the ring mean?

 

Vaidotas

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Feb 9, 2019
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It’s a slow triplet supposingly for technical applications - repro work.
Here is another one in similar focal lenght but a bit faster - f/7.5 with serial 353132.
Weirdly enough mine has only four f stop positions.
Have no clue what 12 marking means on your specimen.
 

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tbw777

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Wow, interesting, but 300mm instead of 307mm
Can it be used for portraits or not? I have a range of iso values: 1-200.
 

Vaidotas

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It’s not THAT venerable fast Glaukar, but sure you can use it for portraiture, desirably on 4x5 or smaller formats.
 

Vaidotas

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Location
Vilnius
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Consider this lens as Cooke series V (f/8) substitute with similar coverage. That might be 8x10 inch with generous movements.
 
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