Interested in members thoughts: You rarely (if ever?) see graded (Slabbed) proof Pandas with the original COA attached in the eBay listing. Often, you will see an original COA for sale separately. So there's my question. If you go to the trouble of grading your proof coin is it important to retain the COA alongside? Or does the fact that the coin is now certified negate the use of the COA?
The graded coin is now authenticated so the relevance of the COA is very little however many collectors still prefer to get the COA with the graded coin they have purchased. I know that I do and many other collectors I know feel the same ... Necessary no ... nice to have yes