I'd definitely say your chip is an error, Rich. But as you say, there are different kinds of errors and to me an error like this, which is basically a "sloppily" produced chip, is less appealing than one where the denomination or number of inserts if wrong.

Also I think if the value of the non-error chip is high there is going to be less of a premium on the error version than with a common chip. And if the number is low enough, I'd think the error's value would be less. If in your example, only one of each chip was known to exist, I think most would agree the non-error would be worth more.