In Mukachevo I found a few antique metal shutters made by the company DUKO, which was based in Prague-Vinohrady. As they are Czech made, they likely date from the interwar period.
Another grouping of DUKO shutters
I also found a roller shutter made by the Budapest-based copmany Paschka. There still remains one of these in Lviv. This one likely dates to before WWI.