Hi Pete
I reckon that you could well be right about the Fatman At The Go-Go / Working At The Go-Go DEMO
In answer to your other questions,
1) I do have quite a large collection of Northern Originals, I used to spend nearly all of my wages when I was single.
I bought every week from Soul Bowl and made quite a few trips to Kings Lynn during the 70's
There are still quite a number of Items that I haven't got even though I did rather nievely try for the lot.
I ended up with most of the ones in top 500 book, not all, but a lot are DEMO & Stock Copies where possible
I am still collecting, but nothing like the volume that I bought in my youth.
The scans that are either NOT original or not my scan I will say when I post.
Other than that they are all currently in my collection and are Original.
Hopefully I can help other collectors with Information & Matrix Numbers etc
2) I scan my records in and then use a freeware program called XnView
I can rotate the image, cut at 1:1 ratio and resize to 300 or more recently 200.
This keeps every image neat and uniform. I now use 200 to save my web space where I host the images.
I only scan larger when It is required for instance I have just scanned quite a few at 300 D.P.I. for "There's That Beat!" Magazine.
Any time I can help with Information I will. Although when it comes to valuing a record I rely on Manship's Price Guide / Popsike etc
-I sort of work out for myself what I think a realistic price would be.
I hope this helps, and answers your question.