This is a rarely found box for an Edison Diamond B reproducer.  I can honestly say I've never seen another one before.  It is 6 1/2 inches long, which is quite longer than the reproducer, and it makes me think it was originally made for either a Diamond A or a Diamond C.

I am selling a collection of phonograph parts, accessories, advertising, and records over the next few months, so please bookmark me.

I am always happy to combine shipping.