Based on the stamped date on the verso, the photograph may have been released/re-released(?) in conjunction with the historic Voskhod 2 mission. Although I really don’t know my Vostok/Voskhod capsule interiors, other than there is indeed a lot of similarity, based on the central location of the apparent single ejection seat, I think this is a Vostok capsule, confirmed at the following links. I also think the ribbed surface of the helmet further supports this being Vostok.
The only other photograph of a legitimately similar/same(?) capsule is at the following delightful – and, although I don’t read Romanian – I think knowledgeable website:
stiintasitehnica.com/iuri-gagarin-cosmos/
Specifically:
stiintasitehnica.com/wp-content/uploads/2016/04/vostok-in...
Both above credit: “STIINTA TEHNICA” website
The image is also at the following. Fascinating reading as well:
www.thebooks.su/read/452908-starman-the-truth-behind-the-...
Credit: “books, E-library” website
I would think, maybe, this to be a training capsule. The helmet the cosmonaut/test subject is wearing certainly appears to be a training version. Check out the appearance of the “CCCP” stenciling job, it looks worse than some of the yard/garage sale signs I’ve made for my wife. Or maybe it was airbrushed in, although it looks 'organic' to the image.
