I've tried this old Горизонт by KMZ for a colleague. At first I thought that it's broken, because the lens when tensioning the shutter button was not covered (such as with my Horizon Perfekt by Lomography). With this old camera made in USSR you have to do one step manually so that the lens is covered .
Produced: 1967-1973 ~ Name: „Горизонт“ ~ Producer: KMZ ~ Frame size: 24x58 ~ Lens: OF-28P 2.8/28 ~ Shutter: 1/30s, 1/60s, 1/125s, 1/250s
I'mm going to replace the seals, so there are no more light leaks ;-)