The Corina was made by the Druopta from Czechoslovakia and is a more robust camera than the Holga, but similar features. It can take both 6x4.5 or 6x6 photos. You won't bet as much vignetting with these and blurry photos, but they are very much a low-fi camera!
I've had a few of these and this one is in the best condition I've seen. All functions working great. Comes with vinyl bag only.
More information here:
http://westfordcomp.com/classics/corina/index.html