In other words, any chip could have a double impression of H&C mold on it. So it would be one of any of those.

Same goes for a double impression hot stamp.

All someone needs to do is name all the errors as Type 1 error, Type 2, etc. which is more work than just saying, Double Mold Impression, or double hot stamp.

I'd say that it's a keeper just for the fun of having it.