Olof Olsson Åberg, my great great great grandfather, was co-founder of Urafors axe factory in Ullungsfors (later moved to Edsbyn), Sweden with his brother Per Stålberg.
These axes are well known in Scandinavia as being extremely high quality and desirable even though they were made MANY years ago, most of them approximately between 1860 to mid 1960s.
There are a number of photos at the Edsbyn museum of the Urafors axe factory and workers, most from the years 1900 and after. I’ll include some links below. When Olof Olsson passed away in 1900, his son Carl Olof (my 3rd great uncle) took over Urafors and moved it from it’s original location in Ullungsfors a short distance away to Edsbyn.
My family has been able to purchase a handful of axes with the stamp of Carl Olof Åberg.