Any ideas where to find a PCGS 1851-O G$ in AU?

been looking the usual places, can't find one.
any help would be appreciated.
any help would be appreciated.
WTB... errors, New Orleans gold, and circulated 20th key date coins!
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Not been looking since my 12 type is complete.
BTW there is a MS61 on the bay. Think it's a little high though.
Some of these gold dollar date and mint mark combinations are harder to find than you might think. When I was working on my set of Type I gold dollars, I thought that the Phildelphia Mint pieces all be easy to find in MS-63 and 64. They weren't, and I even settled for an MS-62 for one of them.