Celtic Gold Stater Atrebates and Regni, Tincomarus or 
Tincommius, Late 1st Century BC - Early 1st Century AD. 5.25 g. 

COM F on an inset tablet
Horseman right, holding spear.

Seaby 76; Van Arsdell 385, 
Estimate: £500-600

Courtesy of London Coins - Auction 163, Lot 207, Dec. 2018.