I just bought this at NSB Auctions, and thought I'd make a post about it It is a follis of Maximinus II, on an interesting undersized and serrated flan. This coin appears to be a variety of RIC 147b from Alexandria mint, although this coin has X above the B (rather than the other way round). Might this coin have been overstruck on a serrated coin from the Seleucid Empire, such as this one (not my coin)? My coin weighs 4.1g and is 20.1mm in diameter, while the closest Seleucid coin weighs about 4g, but is only 16ishmm in diameter, although it's possible that my coin was flattened when striking. Any thoughts would be greatly appreciated! Also, make sure to share any oddities and overstruck coins you have in your collection Thanks!