I agree Frank on the personal taste statement as the art pottery they were selling...well I grew up with it in Eastern Ohio & I have never owned a piece of art pottery uin 38 years of collecting as I have zero interest in it probably because I did grow up surrounded by it.
I spent some time attempting to put together Auguste Jean & his work & the web is full of pages that contain conflicting information. There are guesses that he was born sometime between 1830-1835. Several sources state he founded his workshop around 1859 working in ceramics (his father was a known ceramist) & was not involved in glass until 1875 through 1885 when he stopped producing glass & went back to ceramics. He did file for a few patents in France designed to give a décor or metallic glints first to ceramics then to his glasswork. His first enameled work featured Persian designs & then later Japanese designs & no solid info is available as to where he set up shop, just a possibility that it was in the Cristallerie De Clichy in Paris. He was awarded a bronze metal at the Universal Exhibition in Paris in 1878 for his work in glass & was thought of as an artistic design inventor. Several mention cabochuns & enameling insects mixed with gilt decorations on pieces. One bit of info said he was active until 1907 & no more so I have no idea if this means he passed on or just stopped working in ceramics. There simply isn't a wealth of info on him or his work or at least I could not find anything that amounted to solid documentation. I could not find anything on him as a participant in any U.S. exposition or fair during the years 1875-1885. Ken