Need release dates for these Gadgets

Thanks to anyone that can help :)

TV Film Props

http://www.tvfilmprops.co.uk/pages/convair-800-transistor-radio-552.htm

http://www.tvfilmprops.co.uk/pages/addo-x---adding-machine-324.htm

http://www.tvfilmprops.co.uk/pages/fruit-machine-365.htm

http://www ...

Thanks that was very useful
Our whole site runs on dates of our props, So if you see yourself flicking threw the site and see something without a date and you know of the date it would be a huge help if you could tell us of the date.

Thanks

TV Film Props

Yes we did.
But we are finding it hard to find the release dates of some of our props Can you help?

Need to know the year of these TV's...

http://www.tvfilmprops.co.uk/pages/ferguson-3840---wood-effect-portable-tv-501.htm

http://www.tvfilmprops.co.uk/pages/ferguson-tv-596.htm

http://www.tvfilmprops.co.uk/pages/itt-kb-wooden-case-tv-697.htm

http://www.tvfilmprops.co.uk/pages/ferguson-pocket ...