Apologies for that....I logged in in order to test the links I was quoting regarding Tinypic and was then going to delete it........but I couldn't find a delete facility.
Anyway its the bottom view of what I understand to be a Northwood bowl...except on the site that I was reccomended to go to I couldn't find the colour. My reason for buying it ( via USA Ebay ) is that the dimensions of the foot and the overall appearanve , except the rim are virtually identical to a Davidsons No21 ( ???sure...

) bowl. The colouring also predates one of the Davidsons orange variations by approx10 years.
And also on the Northwood site I finally after 20 years found out why the black bases with 3 feet sometimes did not fit to any of the Davidsons pieces...because Northwood were producing them.
Thats the reason for the photo BUT while its on here now....can any please provide me with some dates regarding Northwood/orange glass.
Regards and thanks
Gareth
Morgan48