Pye Type 47 13 Channel adaptor for use with specified Band I only PYE Televisions to enable reception of Band III channels. I have never plugged this in so I don't know if it is working, though apart from its age, I have no reason to believe that it isn't. Circuit diagrams etc. available on the web.
Included is the Type 16BA2 adaptor. I do not know if this goes with the Type 47 adaptor (I suspect it doesn't). I have been unable to find any information about it. May be of interest to a collector/enthusiast.