I owned a 13/20/25.5" convertible, I think a Raptar, for the 8x10" Korona I once owned. Chunky and heavy, but a good optic. The 13" (combined) and 19" rear component worked very well. The 25.5" (front) component was maybe a bit soft, but it was so hard to use it with my shaky old camera that I'm pretty sure it was my fault. I miss the sound of the big shutter it was in.
Not LF, but I own a 1950s Graflex Ciro 35mm with a 50mm f/3.5 Wolly lens. Lens is darned sharp, probably a tessar.
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