The official power supply for the Grey version of the Sinclair ZX Spectrum +2, from the Amstrad era of the Spectrum.
It will be one in similar condition to that shown in the photo.
Tested and working, with electrical safety checks, new UK plug and packaged to protect.
This is for the +2 Grey. It will also work* with the 128 Toastrack, Spectrum Plus, and both 16k and 48k rubber key Spectrums.
For more information on Spectrum power supplies, please see the series of articles on this PopeyMon website under Popeymon Blog Posts or click the Power Supplies tag. The Intro is here.
For the +2 Grey, this article in particular explains a lot.