I am not a big fan of painted lamps, but whoever did this did a nice job, a nice solid lamp! Shame there aren’t many around.
Worth taking a selection of photos for the reference gallery There are a number with black founts, seems to have been a "thing" for them and their industrial/semi-industrial lamps in the 30s/40s and later. FLs, SLs, OLs, ALs, etc. Alec.