I have no confidence in this coin. It was listed for 170 GBP, but did not sell. Below is the seller’s description.
LOVELY & VERY RARE !!!! Maximianus 286 - 308 AD . Æ Quinarius (13mm, 1.31g ). Treveri (Trier) mint. Struck AD 303 . Obv MAXIMIANVS AVG Laureate head right . Rev VOT / XX / AVGG in three lines within wreath. Ref RIC VI 610b . Very rare !!!
Ex collection of Count Gaston de Lambertye formed in the 18th century . great pedigree !!