Vidor was as well known for its batteries as it portable radios. This trader advert from February 1951 introduces the CN411 AC/Battery portable in slightly-bigger-than-attaché case.  

New! The Vidor "Lido"
"Big Brother" of the Vidor Attaché
meets instantaneous Success!

Vidor has achieved another sensational Portable success with the Vidor "Lido."  For AC/Battery operation the "Lido" is the big brother of the popular Attaché, with larger and more economical batteries and greater power and sensitivity to make it a real family receiver.

Wavebands: 185 to 570 metres and 1050 to 2000 metres.
4-valve superhetrodyne circuit.
AC mains 200/250 volts 40/100 cycles.
Batteries: (Large) L.5039 HT L.5058 LT.  (Small) L.5512 HT, L.5048 LT.

Brown and Fawn leatherette case, cream escutcheon.

Vidor CN411 Complete with batteries £18.18s

Vidor Ltd. Erith, Kent