Identification Help Needed: Greek Or Roman Bronze, Bust Right, Reverse Three Banners Or Stalks

Well done, Novicius. I think that is in fact the AE semis of Hadrian or very close. I had no idea that was an eagle!

Can't read the consul year, of course. The semis listed at the top is a bit larger in diameter, at 16.5 mm vs. my example at 14.6mm, but the weight listed is 2g vs. my example at 3.1g. I can understand the reduced diameter due to heavy wear. The coin at least has quite a nice patina, a bit crusty, very original-looking though.

Weights seem to be all over the place; I see anywhere from 2.0g to 3.3g listed.

Out of curiosity, what is the difference between a "semis" and a "quadrans?" Is it a matter of weight, or diameter, or both?

Excellent - thank you for the link. I'll go read up now. I am not as familiar with the earlier fractional denominations. Trying to figure out whether a coin is a "sestertius", "dupondius", "tetradrachm" or "pentassarion" for example (especially when called different things by different references) is challenging enough and now I need to delve into the fractional coinage.