So The Dumping Union recently had the opportunity to acquire 2 separate Williams' Narc boards from the same seller. Both turned out to be formerly undumped versions. The two new versions are v4.00 and an early v1.80! The new v1.80 set has all new ROMs for both the program and graphics ROMs and plays a little different then the later sets.
Phil Bennett did a nice quick comparison / write up about the noticed differences here: https://twitter.com/PhilBennett3D/status/1341253902935584768
Definitely worth a the read.
Special thanks goes out to the DU members who pointed these boards out as well as CoolMod and Phil Bennett who had a major helping hand in acquiring these new sets!
[Posted by: BrianT]