Unusual Dual Horn Speaker - Duovox?

This horn is one of the strangest I've ever seen. The reason for having back-to-back horns is difficult to understand. The base has a piece of Dymo tape attached which says Duovox. I can't find any info on a Duovox horn so I can't confirm that this is the actual brand. The wood base and upper platform appear to be not original, and were probably added by a former owner for display purposes. The driver shows continuity with the usual clicking noises generated from battery contact. If you like the unusual and rare this item fits the bill.

US shipping only: Buyer to pay actual shipping and insurance costs.