I'd like to cite some classic works (for illustration, Hobbes' /Leviathan/), and it's becoming more common now in some academic journals to give dual dates for such citations: both the edition you are actually using (say, the 2017 Penguin edition), and the original date (1651). I'm using the Chicago author-date system, so in the text you might have "(Hobbes 2017/1651)". But I can't work out how to do this neatly in Zotero: it seems that the date field is restricted to providing a single date, and I can't see an obvious workaround: bunging the second date in some other field presumably won't have it display in the main text, and putting it in as a prefix or suffix will make it appear either before the author name or else after any specific page/chapter reference (e.g. "Hobbes 2017: ch2 1651"). The best I can think of is adding a date after the author surname, but I wonder if there's a better way.

Any help greatly appreciated!