Wall version of the W28 and also based on the Modell 26. Electrically it was exactly the same as the desk version and it has many of the same components. A Siemens & Halske design, it was made under licence by many other manufacturers in many country’s.
Although the desk version has lost the well known slits of the Modell 26, the wall version has retained them. The wall version does not have sounding holes in the base plate, like the desk version does.
This W28 was manufactured by DTW (Deutsche TelefonWerke), probably before world war two. The designation W28 is stamped in the back of the base plate.
It was used by PUEM, Provinciale Utrechtse Energie Maatschappij (Provincial Energy Company of Utrecht, Utrecht being a province of the Netherlands). A very nice PUEM logo can be found on the side of the phone, just below the manufacturers logo.
This telephone has been refurbished during its working life and has received a new dial, made by Heemaf, a different handset and a new capacitor.