I offer coins of the Roman tetrarchy: Many are here at Augustus Coins: http://augustuscoins.com/Tetrarchy.html and I feature two below A silver argenteus of Constantius I, struck c. 295 at Heraclea as one of the first types of this new denomination. 18 mm. 3.14 grams. Light scratches, as well-illustrated in the photo. RIC Heraclea 5, "r3", plate 12, page 529. The four tetrarchs sacrificing over tripod altar in front of a camp with six towers, possibly the Praetorian Camp. Nice portrait scowl! [$219 + $6 shipping in the US] Maximian (286-305) at the London mint GENIO POPVLI ROMANI Genius standing left no mint mark, for London RIC VI London 25 Lovely dark green English patina. An excellent example! Look at the centering! Slightly better hair detail than the photo shows (especially in front of the wreath). A super coin [$95 + $4 shipping in the US] I have also redone my "Augustus Coins" page of reference works on ancient coins: http://augustuscoins.com/numislit.html and my page of free ancient history books: http://augustuscoins.com/books.html I have collected ancient-history books for over 40 years and am trying to give some away for only the cost of postage (therefore, I will not ship them outside the US). If you buy a regular numismatic book or catalog and pay the basic postage, I can send one or more free history books along for just the cost of additional postage (usually 75 cents each). If you buy a coins, I'll give you the same deal.