Watch List notes:

Nero (54-68), AR Denarius, 6h, Rome, struck c. AD 67-68, NERO CAESAR AVGVSTVS, laureate head right, rev. IVPPITER CVSTOS, Jupiter seated left, holding spear (BMC pp. 211, 80; RIC 69), some surface blistering, otherwise fine or better.
With 'Certificate of Authenticity' from the London Mint Office, wherein purchased 27 June 2019 for £895
Estimate: £50 - £80