Good to know, THANK YOU, SP67

Thanks, Bill
The Mint is one of the few places where QC napping is acceptable.
Would I be correct in assuming this defect is rare but doesn't have much value?

Found this in my pocket about 40 years ago. It's been in my sock drawer ever since. I've never cleaned it. I just tried searching this condition and didn't find anything. Any thoughts, opinions, info or evaluations would be appreciated. Thanks