Sylloges, by definition, illustrate every coin or almost every coin in a collection. (Sylloge, from the Ancient Greek συλλογή ["collection"], is a compilation of documents or data.) The Milan and Florence collections of Roman coins are large and interesting, containing as it does the old Brera collection with many rarities in good condition, recently increased by the very large Laffranchi collection with many academic rarities, but generally only in Fine condition. For those specializing in a particular Roman emperor, I would certainly recommend acquiring the relevant volume of this Italian sylloge. And for lovers of coins from the Gallic Emperors, volume XI has just been published. It contains specimens from Amelia’s to Victorinus, including 92 specimens for Postumus , one for Laelianus, five for Marius and finally 33 for Victorinus. The book also contains very clear photographs on an excellent quality paper. A "must have" at only 35 euros.
That's a beautiful reference with excellent photos! These large size references are a joy to read and an excellent source of information for a given area of specialty. I have a sylloge from the ANS, published in 1981, Part 6, for the Greek coinage of the Palestine and South Arabia, including Roman Provincial issues. It is a very good reference, but the photos do tend to be grainy.
Two really nice books posted. Congrats with the new one, @Ocatarinetabellatchitchix ! Today I could pick up a SNG at the post office myself: SNG Copenhagen, supplement 1942-1996. I think I may have the biggest one here….