A quick cursory look. #1 Ptolemaic Egypt #2 The Roman Empress' name is easily readable on obverse legend. #3 Alexandrian(Egypt) Roman Provincial Tet? #4 Alexandrian(Egypt) Roman Provincial Tet #5 Celtic - Danube? #6 Horse/Athena? #7 Bust/Lion left? #8 Apollo/Tripod? #9 Kithara? #10 Bull right? #11 Roman Republic #12 Dolphin right? #13 Roman Republic #14 Tiberius/Livia #15 Sicily, Kamarina(Owl/Lizard)? #16 Cappadocia? #17 Nike? #18 Alexander the Great(Herakles/Club & Bow case) #19 Zeus seated #20 Herakles/Hippocamp?
5. Sikyon triobol. CNG: eAuction 403. SIKYONIA, Sikyon. Circa 100-60 BC. AR Triobol – Hemidrachm (16mm, 2.19 g, 4h). Reduced standard. Olympiadas, magistrate. (cngcoins.com) 6. Kaulonia (judging by size prob a drachm or smaller fraction) CNG: eAuction 305. GREEK. Magna Graecia & Sicily. Lot of two (2) silver coins of Kaulonia in Bruttium. (cngcoins.com)
#11 - search for RVF on acsearch Roman Republican; Denarius. 122 BC; Minucius. Q. Minucius Rufus. https://www.acsearch.info/search.html?id=7738238 #13 - search for Q.PILIPVS on acsearch; your coin looks like a Fourée (silver plated bronze coin) Roman Republic; Denarius. Rome, 129 BC; Q. Philippus AR https://www.acsearch.info/search.html?id=6765660
Hello again @Justin Cohen I'm not very familiar with most of these coins. I have some ancient Greek coins, but there are many ancient Greek coins, with which I'm not very familiar. Here are the coins, that I recognize : Coin 2 looks like a Roman Antoninianus with a portrait of the empress Severina, the wife of the emperor Aurelian. Coin 11 looks like a Roman Republic denarius. On the reverse, are the dioscuri twin half brothers Castor and Pollux, riding horses. If you want to get more specific, with the coin attributions, there are some useful ancient coin search web sites, and books. I posted the following information, in your previous thread. But, in case you didn't notice it, I'll post it again, here : 1. ACsearch : https://www.acsearch.info/ Free. To use the basic search feature (or perhaps to view large photos of coins. I've forgotten), you have to create an account, but it's free. To view hammer prices, you have to have a paid subscription. I just use the free search feature. I use this web site, more than any other. 2. CNG Research : https://cngcoins.com/Coins_sold.aspx Free. I recently discovered this, after someone on CoinTalk mentioned it. It looks pretty good. Just type keywords, into the "Search" text area. CNG has a stellar reputation, with experts who know what they are doing. 3. Roma Search : https://www.romanumismatics.com/ Free. I also recently discovered this, after someone on CoinTalk mentioned it. It also looks pretty good. Roma also has a good reputation, with experts who seem to know what they are doing. However, I don't know as much about Roma, as I know about CNG. 4. Wildwinds : https://www.wildwinds.com/coins/i.html Free. A good, free search web site. I have used this a lot. 5. CoinArchives : https://www.coinarchives.com/a/ Free. A good, free search web site. I've used this a few times. 6. Coin books : Books about coins, are very helpful for attributing ancient coins, and learning about the coins, and fun to read. However, books cost money. Some ancient coin collectors don't have any coin books at all. Other ancient coin collectors have spent a significant amount of money on coin books. You can find recommended coin books, by searching the CoinTalk threads. The books that I use the most, for ancient coin attributions, are the following Sear books : Greek Coins And Their Values Volume 1, Greek Coins And Their Values Volume 2, Roman Coins And Their Values Volume I (Roman Republic, Julius Caesar, and the first 11 emperors), Roman Coins And Their Values Volume V (Constantine II through Romulus Augustus), and Byzantine Coins And Their Values.
P.S. : I like the Sear books, partly because the photos of the coins, and the descriptions of the coins, are on the same pages. I prefer this format, versus books that have all of the coin photos at the end of the book, because I don't have to flip the pages back and forth, over and over. I also like the Sear books, because they are relatively inexpensive, and because they have photos and descriptions of many types of coins.
P.P.S. : There are other coin books, which are more complete, than the Sear books. However, I believe, that the Sear books, are pretty good, for my purposes, because I'm sort of a generalist collector. I collect many different types of ancient coins. However, I have some other, more complete books, for certain specific areas, in which I am especially interested.