Hello,
This is certainly WMF 'Ikora' glass form the 1930's, with the original fittings, having replacement bulb holders - although I believe part of the fitting is actually missing, since the bulb holder on the top doesn't usually sit directly on the chrome cap.
I my experience the metal fittings on these lamps by WMF are marked less than 25% of the one's that I have had over the years. I look on the mark as a bonus, but unnecessary given the glass (which is rarely labelled) is the main part of the item.
Nigel