To much info. I agree with larger text. Make them engage you. If your going to stay with the text. Provide a hand out. That way they can share with others and remember at what table the coins are at
One other thought: if you do have a leftover space, you might include a label with a general description of a Roman denarius, with information such as "these coins varied in purity from 98% to 80% [or whatever the figure is] and generally were about a day's wage for a soldier in a Roman legion."
Another thought occurred to me, regarding the date that is part of each label. It would be more consistent if you included just one of the following: (a) Date range that ruler lived, or (b) Date range that ruler ruled, or (c) Date that coin was minted/struck
I agree with the points made by many here. Doug Smith makes perhaps the most important recommendation. . Even it it isn't obvious, the attribution and the provenance will be of little value to most that will observe. Deacon Ray's presentation is marvelous with the visual ornamentations, but the most important improvement is the "terse" descriptions.
Here are the posters. I want to thank @Deacon Ray and @TIF for working with me on this. I truly appreciate their hard work and most of all their incredible generosity in seeing this project to its finish. Please keep in mind the actual size of each panel is 20X30 inches.