It is an "autoportrait" selftimer with a curved mirror.
After setting the timer, the photographer goes to his place and he can see his own reflection in the mirror.
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Known serial numbers:
350 _____ ussrcameras.com
429 _____ web
2256 ____ ussrcameras.com
2414 ____ web
2817 ____ Michel's collection
3251 ____ Molotok
3338 ____ eBay
3687 ____ web
3772 ____ eBay
3985 ____ eBay
4314 ____ David Tomlinson
4881 ____ Jacques M.
4937 ____ eBay
5086 ____ PYC
5752 ____ eBay
6114 ____ Molotok
8083 ____ imcphoto
8090 ____ eBay
9944 ____ Christian G. (Niko80)
10814 ___ fotomuda
11508 ___ eBay
11539 ___ Molotok
12341 ___ eBay
12596 ___ ebay _____________ see photos 5 and 6
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