I recently aquired a pair. The tags have been removed, you could actually tell where they were on the back of the cabinets. The drivers and crossovers all Klipsch. Also have numbers stamped in the wood. The missing tags would confirm their authenticity for me. I'd appreciate some of the experts that could tell me other significant marks that might help me identify them as factory built K-horns. The front grills have a Klipsch decal also. I will try to get some pics soon, I'm sure you'd need them, as well as the driver model numbers. Thanks in advance