Shazb0tHi @Shazb0t -- I don't know the specific tannery but I can ask on Monday. The best I can do for now is to let you know these are made from "Milano grained" Italian leather and point you toward the manufacturer's page for more info about the Tyler collection: http://boconi.com/collections/tyler-1
Shazb0tMilano grained leather is a full grain cow leather treated with an aniline dye. This dye offers superior color consistency without covering the natural grain of the leather. The leather is then "tumbled" for the texture seen in these bags. Hope that is helpful for you!