Unknown Russian Bi-plane ...

[Mark Allen M]

... to me anyway. Any ideas?

[quemerford]

Looks like a Polikarpov Po-2 but with a cabin.

EDIT: Po-2L : Limousine version with an enclosed passenger cabin.

[Mark Allen M]

Thanks for your encyclopedia knowledge. As usual too. Learned something today.

[JohnB]

Basically, the Russian equivalent of the Thruxton Jackaroo...a four seat cabin conversion of a Tiger Moth.