My main area of interest, the LRB period, tends to have exergues in this format; SMXY, where SM is Sacra Moneta, and X is the first letter of the mint, and Y is the numeral for the officina (branch) of that mint. Of course, some of them don't have the SM and start with the officina letter and then abbreviate the mint, such as: Roma - *rSISC* Where the dots mean (something) and there is Gamma as the officina letter and SISC as the abbreviation for Siscia. However, sometimes we have rather unusually long mintmarks that spell out something a bit more interesting. Valens - R*PRIMA where R = Rome PRIMA = first officina. No idea why this one is so unusually long, but it's kind of neat to see it spelled out entirely like that. Julian - VRB*ROM where VRB = Urbs (city) ROM = Rome This is cool, because instead of spelling out the officina number, it goes right into it and says "CITY OF ROME" Finally, an earlier one: Aelius - PANNONIA Instead of an officina or a mint, it spells out the entire province of PANNONIA. The Pannonia coins often have the word split up between left and right fields, but this one is kinda intersting because it squishes it all in the exergue. Of course, we also have some provincials where it, instead of a mint or province, spells out the regnal year of the ruler! Trajan Decius - ANIIII And we also have the provincials that have such an extraordinarily long reverse text that they are forced to finish up the legend in exergue: Diadumenian - YΠ CTA ΛONΓINOY NIKOΠOΛITΩN ΠΡO-C ICTΡ where the legend is too long to fit around, so they put the CICTP on the bottom. I guess they finally ran out of space to finish up the last word as ISTRUM and left it as ISTR What's the most interesting/longest exergue text you have?