Proxi (repro?) device for Fed 1.

Hello,

I have received lately a proxi device for Fed 1.

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It was certainly prewar made, when the "macro" 3,5/50mm Fed did not yet exist, so before 1938.
An interesting device, with an additional +2 lens which fits only the 3,5/50mm lens, and a very well made correcting finder with two optical parts. All that is connected to the rangefinder, of course. As to make correct photos with all that...🤔
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Two other photos:

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/UserContent2/2852026_IMG_2066.JPG

The "spectacle" logo shows that all that was certainly not directly made by Fed. But by whom?
I wonder too about the similitudes and differences with the "solid" macro lens. Same or different use? I don't know. Anyway, this device is coupled, not the "macro" lens...

Amiti&#233;s. Jacques.
Special note to Vlad: absolutely no problem with this new version of the site. And to insert an image is even easier. If I can do it...
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Hi Jacques,

this is a logo of Izyum Factory in Soviet Ukraine which was established in 1956 so it seems to be a post-war product.

Thank you and I'm glad you like the forum updates, more are coming.

Best regards,
Vlad