my don't i have some rubbish . just been out to the other garage and found a book from just one supplier to the trade . Back in the day , and I suspect it must be broadly similar today but all online , a manufacturer of small scale production would choose fittings from a catalogue . This catalogue is in fact a book of several hundred pages featuring everything from interior lights , ashtrays, match striker plates ( remember them on the back of coach seats ) , grab handles , hinges etc. etc. I SUSPECT the hinge you are looking for may be at the top of this page , less agricultural than the ebay ones - blow the picture up and see a garage spider top left