The catalogue number is located in the upper right-hand corner on the back of the record jacket. I know this scanned badly, so apologies. Reissues will typically have a different catalogue number or an added barcode.
The album is a gatefold release with photos and song lyrics inside. Later pressings, such as the Fame release will have the lyrics reprinted in black. I've also chopped this into two sections so that it will blow up larger.
The inner sleeve on the original release is a sort of peach colour. It also has the catalogue number printed in the upper right-hand corner. I only scanned this corner section so that it would show better.
The original record labels have large EMI logos on both sides, whereas a reissue like the Fame release will have large Fame logos on each side.
Also check the run off dead vinyl of the record. Only original releases have the inscription "Hope You Like It!" scratched into it.