Australia 1884 Melbourne Sovereign PCGS AU55. Version S-3857B – WW buried. Note that the B.P initials are just visible. You can see the S-3857C 1883M sovereign for the WW complete version by clicking on the following link:
https://topendcoins.com.au/product/australia-1883-melbourne-sovereign-pcgs-ms62/
“Buried” variants are a little more common than “Complete” variants as PCGS catalogues 47 of the former and 36 of the latter. See the following link:
https://www.pcgs.com/pop/detail/victoria-1855-1901/5060/5061
You can verify the certificate of this coin by clicking on the button below:
