Delete comment from: Ken Shirriff's blog
It looks like this ALU (or related) was used in at least one arcade machine in 1980 - as part of a 12-bit processor - by a company named Cinematronics:
https://ia800503.us.archive.org/3/items/ArcadeGameManualRipoff/ripoff.pdf
Mar 20, 2017, 12:56:37 PM
Posted to Inside the vintage 74181 ALU chip: how it works and why it's so strange