are any of these clusters worth saving?

So you are thinking the odometer rolled over on a 63 something Mopar to the tune of 164 thousand miles? People dint drive them that far and they dint keep them that long IMO. Example? a 63 Chrysler New yorker was an ugly POS in the early 80s no one wanted to be seen in one. The pushbutton automatic was also wonky at that time not many shops wanted to fix them. This in in my area in southeast Pa.

No, I’m not thinking anything. None of those gauges can physically register more than 99,999 miles. So you’ll never know whether it’s got 64,000 miles or 164,000 miles just from the odometer. Doesn’t matter either way, you can’t tell - so what’s your point?

On average these cars weren’t normally driven the number of miles when they were new that cars see now. But there are definitely plenty of these cars out that went more than 100k miles. And just from the gauge you don’t know anything, maybe the gauge panel had a problem and was replaced and the car kept going? All just speculation with no possibility of a real answer.