Marcus Aurelius (161-180 A.D.) Silver Denarius - 17.90mm, 2.44g
Obverse
M ANTONINVS AVG TR P XXIIII
Marcus Aurelius, his laureate head right.
Reverse
SALVTI AVG COS III
Salus standing left, holding scepter and feeding serpent arising from altar.
The image below was photographed by NUMIS.
The image above is my own scan using an A4 flatbet scanner.

Minted in Roma (Rome, Italy) in 169-170 A.D.

Reference:
Mattingley, H. & Sydenham, E.A., "Roman Imperial Coinage", Volume 3 (RIC), p231?, nr. 222.
Mattingly, H., "Coins of the Roman Empire in the British Museum", Volume 4 (BMC), p462, nr. 545?.
Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Volume 2, p303?, nr. 4927.
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 3, p13?, nr. 546.
Seaby, H.A. & Loosley, R., "Roman Silver Coins" (RSC), Volume 2, p202?, nr. 546.
Van Meter, D., "Handbook of Roman Imperial Coins" (VM), p144, nr. 8/1?, var with ol/17.
Suarez, R., "Encyclopedia of Roman Imperial Coins II" (ERIC II),  p259, nr.159? (B08, O13, R50, T59)
Suarez, R., "Encyclopedia of Roman Imperial Coins II" (ERIC II-digital), p218, nr.159? (B08, O13, R50, T59)
Kampmann, U., "Die Münzen der römischen Kaiserzeit" (Kampmann, 2e Auflage), p183, nr. 39.25.2?.

Quality: Very Fine+
Rarity:  Common
Found by a metal detectorist in or near the town of Zaltbommel, Gelderland, the Netherlands.
Official number in the NUMIS database: 1158066
PAN (Portable Antiquities of the Netherlands) number: 30630