As already mentioned the maker is Ludwig Röhr (Liudvikas Rioras) in Vilna/Vilnius, Lithuania. He was born in Riga, Latvia in 1776. He worked as apprentice in 1795 in Vilna and was master 1807-1837 in Vilna. Source: Lietuvos Auksakalysté XV-XIX amžius.
Mind my asking, but same last same and period in two different countries. I don't understand what strange/interesting it is in that?
Mind my asking, but where from is the year 1838?