The numerals do not line up.
For many decades that was always the rule of thumb around these parts: If the digits on the odometer don't line up, chances are it's been jacked with. I have no idea if that's true or not, but I do know that I've had at least a couple of cars with somewhat misaligned digits that were very unlikely to have had their odometers altered. I think one of them was a one year old '94 Chevy S-10 that I bought with only 5000 miles from a reputable new car dealer. I put about 150,000 miles on it. As the miles racked up over the years, the digits kind of got out of line with each other. That's how I remember it, anyway.