In early 1947 the first run of Klipschorns were made. These were the only Klipschorns made by the Baldwin Piano Company, under contract from Paul W. Klipsch. Twelve were made, serial numbers 002-013. Of course, being made in the mono era, they were sold singly. To add to the collectability of these, the tweeters were the Western Electric 713A. These early designs were actually two-ways, notably different than the Klipschorn of today. They remain the most collectable of this model that has been in continuous production longer than any other speaker extant.