Now the Goertz Hypergon is an interesting lens...
Looking back in my old literature (Hans Schmidt: "Photographisches Hilfsbuch für ernste Arbeit", 1. Teil, Zweite Auflage, Berlin 1910), they were made in 60, 75, 90, 120, 150, and 200mm focal lengths. Herr Schmidt "only" reports the coverage as 135°, but that is still an image circle of about 5 times the focal length. So the 200mm would cover 1000mm - 40 inches!
If the "propeller" is missing it will only cover 110° before light falloff gets too extreme - about the same as a Zeiss Protar f:18 of the same vintage.
Now compare the price of those two classic lenses: A Hypergon 120mm with missing propeller will easily get $2000 on eBay, a Protar 110mm can be had for around $100. So what was the price in Berlin, 1910?
Hypergon 120 with propeller: 170 Mark
Hypergon 120 without " : 150 Mark
Zeiss Protar 110mm : 64 Mark.
The Hypergon is f:22, the Protar f:18, so that makes no big difference. It's obvious what would have been the best investment, but not what makes the huge price difference today? A Protar is probably a better lens than the Hypergon, at least if you can't use the full image circle!