Blackstone Ukulele by Epiphone?

[nrand]

I bought this recently and cannot find another anywhere, nor anyone who knows anything about them. I believe it to be Japanese from the 50s or 60s and possibly made by Epiphone. Epiphone apparently made tenor guitars under the Blackstone name. I have tried a few other forums with no luck. Anyone seen one of these before. Its a baritone, solid mahogany.
http://i908.photobucket.com/albums/ac284/nrand_photos/Blackstone%20Ukulele/KGrHqVHJB8E-8IsEwgBP5d9djCPw60_57_zps6ab1cd5f.jpg
http://i908.photobucket.com/albums/ac284/nrand_photos/Blackstone%20Ukulele/T2eC16dHJFoE9nh6pi5WBP5d7DzwBQ60_57_zps184a1e21.jp g
http://i908.photobucket.com/albums/ac284/nrand_photos/Blackstone%20Ukulele/T2eC16JHJHwE9n8iguuJBP5eB0KV60_57_zps075cc946.jpg
[IMG]http://i908.photobucket.com/albums/ac284/nrand_photos/Blackstone%20Ukulele/T2eC16ZHJGoE9nuQgjwzBP5eImb4w60_57_zpsde5edb87.jpg[/IMG