While not mass produced in the modern sense of the term, Oriental silk paintings of this type were made in very large numbers for export to the West since the turn of the 19th Century. Most have the Artist's signature in the form of what's called a "Chop Mark", the red marking in from of the script. Most of these Artists are "Unknowns", meaning there is very little information regarding themselves or their work.
Values for these wonderful pieces of artwork vary considerably, depending on size, vintage and subject matter. Most in my opinion are bargains at what many now go for at auction. In the Current market we often now see comparable examples by unknown Artists selling at auction in the $200.00- $300.00 range.