Herodotus

Speaking of hairstyles... This empress seemed to have a fairly unique style. (SELLER'S PHOTOS) GALERIA VALERIA, wife of Maximian Galerius. (AD 308-309). AE follis. Antioch Mint. O: GAL VALERIA AVG B; diademed, draped right. R: VENERI VICTRICI/ B/ ANT; Venus standing left, holding an apple and lifting her dress over her shoulder. At the top left, a crescent. RIC 107

Nice! I have this variety... SEVERUS ALEXANDER (AD 222-235). Denarius. Rome. O: IMP SEV ALEXAND AVG. Laureate head right. R: VIRTVS AVG. Severus Alexander (as Romulus) advancing right, holding spear and trophy. RIC 225

Yeah... The vid looks good. Nice coin. Congrats! I love me some good Flavian bronze..😊

I'm certainly not an expert on cleaning ancient coins. However, I do know that a sustained soak in some distilled water may do no harm. It may loosen some of the lesser adhered earthen encustrations. On a side note... The flourescent green spots on the S VI of the obverse legend look to possibly be the early onset of bronze disease, and it may warrant some close observation, and perhaps, treatment.

The first coin appears to be a reverse portraying Apollo holding an arrow and grounded bow. Perhaps(?), Demetrios II Nikator - Seleukid Kings of Syria, Damaskos - 2nd reign 129-125 BC, or Antiochos VIII Epiphanes(?) A picture of the obverse side may help.

ACSearch(suggested by RYRO above) is a great resource. This type appears to be from Syracuse, Sicily 5th Republic(minted from 215-212 BC). The exergue looks to be a fragment of: ΣΥΡΑΚΟΣΙΟΝ Here's another example...

A few years back, I was the winning bidder of this coin in an eBay auction(Hammer: $173.51 +$10 shipping). After receiving the coin (and pleased with the transaction), the seller messaged me a few days later. He mentioned that he had a few more coins that his late cousin had left him, and asked if I would be interested in purchasing them together as a lot outside of eBay. He claimed that he didn't want to take the time to list them individually, and that he would take a reasonable offer. Of course, my scam-sensor started pinging. Yet, the guy seemed legit. He maintained a solid seller feedback history, and he also had a brick & mortar (watch-repair)business (associated with his name) on a card that came with the above coin. So, I said I would take a look, and he sent me the below photos. Still fairly new to collecting at the time, I wasn't really too sure what I was looking at. So, I figured $20 per coin for the larger coins was a safe bet, and $25 for the rest. He accepted my $125 offer, and the coins arrived a few days later. I notified the seller that I received them, and I thanked him. He also thanked me for making it convenient for him to take them off his hands. He had used the proceeds to go out for a nice Sushi dinner with his wife. Includes: Severus Alexander, Hadrian, Antoninus Pius and Nero Claudius Drusus Sestertii; a Galba Alexandrian Bi Tet; Macrinus; a couple Byzantines, and a cool-looking Medieval weight(?) I think I scored pretty 'lucky' on this transaction; the Boeotian Stater too, for that matter.

Nice coins in this thread! I have this one of Julia Domna. Julia Domna. Augusta. (AD 193-217). AR Denarius. Rome mint. (Struck under Septimius Severus, circa AD 207-211) O: IVLIA AVGVSTA, draped bust right. R: FORTVNAE FELICI, Fortuna standing left, holding cornucopia and resting arm on rudder. RIC IV 552 (Septimius)

Nice collage!!! I have this one coin portraying Lucilla. Lucilla. Augusta. (AD 164-182). AR Denarius. Rome mint. Struck under Marcus Aurelius and Lucius Verus, (AD 161-162). O: LVCILLAE AVG ANTONINI AVG F; Draped bust of Lucilla right, hair weaved and coiled at lower back of head in small chignon. R: VESTA; Vesta standing left, holding simpulum over lighted altar in right arm and palladium in left arm. RIC III 788 (Marcus Aurelius)

Nice!!! A coin type that I will likely (at least in the near term) have to live vicariously through others' acquisitions. I'm a tad envious... Only a tad.😉

While not uncommon for some later Imperial Denarii to weigh in @ <3.00g, that is not the case with RR issues. Short of major flan damage(chips etc.), that weight alone ought to be enough to safely presume it's a fouree.

NERVA

SELEUKID KINGS of SYRIA. Antiochos VI Dionysos. (144-142 BC). Antioch on the Orontes mint. O: Diademed and radiate head right, wreathed with ivy. R: BAΣIΛEΩΣ ANTIOXOY EΠIФANOYΣ ΔIONYΣOY; elephant standing left, holding torch in trunk; ΣTA above cornucopia in right field. SNG Spaer 1772