Lens of an old English SLR-camera

[German§]

Is there somebody who can tell me something about this lens?

[Dan Fromm]

It is an aerial camera lens, probably a Dallmeyer Serrac. That is, a tessar type. The first two characters of the serial number are UU, I think this means Dallmeyer but could be mistaken.

The "broad arrow" on the barrel shows that it was British crown property. 14A/3140 indicates that it was Air Ministry photographic equipment (14A) purchased under contract 3140.

To verify that it is a tessar type, count reflections. There should be two strong reflections from the front cell, two strong and one weak from the rear. The weak reflection may be hard to see.

[German§]

Thank you for your Information. Do you also have some idea about the serial-no.? How old in a Dallmeyer like that?

[Dan Fromm]

Great Patriotic War.