At my local shop, which makes it’s own custom horn systems using mostly vintage drivers, I recently hear two fantastic horn systems. One had a cabinet that is a copy of the Western Electric 753 cabinet. But, instead of a 713a driver, the speaker used a 713b driver. Because the 713b doesn’t go as high as the713a, this system had a tweeter (T35). The woofer is an Eltus copy of the Jensen woofer in a genuine 753 speaker. This speaker was great sounding even with its placement inside a wall shelving unit. The builder said it is better sounding than the genuine 753 he owns.
The other system was quite unique in appearance. It was like a large vanity with a coiled up snail-shaped horn sitting in the slightly lower center section. The horn had an IPC 1000 compression driver. The woofer is an 18-inch Goodman, and the tweeter is, I believe, an RP 302 (not visible). I heard this speaker driven by a vintage WE 124 amp and a quite rare WE 94 amp.
I really liked both “new” horn systems made from very old drivers.