Quote:
"Chapman" Proofs are super brilliant and have only 16 berries in the wreath on the reverse, as opposed to 17 on the "Zerbe" Proofs. Additional die characteristics include a hollow area around Morgan's initial on the truncation line on the obverse (caused by die polishing) and light die striations around UN, AM, and RICA on the reverse.
The quote above is from CCF member SeatedNut.
Check for yourself to see if your coin has those characteristics.