DaveC113, JLM, usp1 & geowak - The speakers you heard were the AC-1. The last I heard, they were being offered for $65,000/pair. They are nearly 7 feet tall and they are made from solid wood. I believe they are limited to 30 pairs because that is how many pairs of RCA MI 1443 (1428b) drivers he has been able to scare up in this lifetime.
Back in the 1930s, during the depression, one of the only growth industries was Hollywood and they were cooking. As a result movie palaces were built in every town and city in our country. Since "talkies" had become all the rage, sound was needed for the ever larger theaters. The amps at the time were single ended tube jobs so highly efficient speakers were required. Mechanical amplification modeled after Rudy Vallee's megaphone came into existence and horn loudspeakers were born. From there refinement developed them into a form that people like Jonathan Weiss and Bill Woods insist has never been equaled to this day. Harry Olsen is their god.
My own speakers are modeled after the AC-1 and, according to Bill get dangerously close to duplicating them. Mine are only 4 feet tall. And I only have about $7-8K in mine, so they are affordable, have no coloration, and deliver excellent bass down to about 40 HZ. The dispersion of the horns is only 40 degrees so you need to sit back at least 12 feet when they are spread about 9 feet apart as mine are. Upside to the narrow dispersion exists, of course. No side wall reflections before the primary waves wash over you.
If I remember correctly, the plinths will set you back about $2 grand. Another item that has always had me interested is the Schick tonearm.
