Great Britain
Victoria gold 1/2 Sovereign 1866/5 AU Details (Cleaned) NGC, cf. KM735.2 (overdate not listed). Die #11. An intriguing unpublished overdate, another example of which, though with a different die number, appeared in the Goldberg's May 2004 Auction #25 (lot 1296), which though hairlined, showcases elements of a strong strike.
HID02901242017
Estimate: 400-600 USD