Together with the WS19, a box containing spare valves was issued.
![](https://paraset.nl/aa/wp-content/uploads/2019/03/Tube-box-395.jpg)
This box came from an Italian lot of surplus. Some @#$@!# Italian artist painted this box. Bye, bye markings.
![](https://paraset.nl/aa/wp-content/uploads/2019/03/Tube-box-intern-0-395.jpg)
The interior, containing the valves, could be lifted by means of the green strap.
Tubes could be located by means of the printed cloth in the cover.
![](https://paraset.nl/aa/wp-content/uploads/2019/03/Tube-box-intern-1-395.jpg)
Three tubes were mounted under the frame. The red one is the famous EF50, made by Philips-Holland. Just before the outbreak of the war, a million (!) of these were exported on trucks to England.
![](https://paraset.nl/aa/wp-content/uploads/2019/03/Tube-box-intern-2-395.jpg)
The other side. Notice the Broad Arrow!