I was flipping through a box of stamps at a show yesterday looking for Gagarin stamps and I came across one that I'm not sure about.
This is Gagarin:

And I think this is Gagarin too:

^ Scott 314
There are some obvious differences, like the mouth, but there are a lot more features that I think match exactly. Like Shepard Fairey's Hope image. The Scott catalog only described the dogs, Belka and Strelka.
So do you think that's Gagarin on the Kazakhstan stamp?