Prove It Every Night!

Repressed or copied on the following releases:
PROVE IT EVERY NIGHT - Unknown Repress D (LP)
PROVE IT EVERY NIGHT - Unknown Repress C (LP)
PROVE IT EVERY NIGHT - Unknown Repress B (LP)
PROVE IT EVERY NIGHT - Unknown Repress A (LP)
PROVE IT EVERY NIGHT - Retro First press (deluxe cover). (LP)

Notes:
Many versions and variations around. The 'distinctive elements' are mainly 4:
1) The cover which may be:
* deluxe
* b/w insert. Note that the insert may be flying or glued, but this is not considered a difference.
* b/w insert but filtered in dark orange - brown.

2) The matrix, which may be:
* S-1A // S-1B , note the dash after the "S" (let's call it type 1)
* S1-A // S1-B , note the dash after the "1" (type 2)
* RBL-1 S-1A

3) The label, which may be:
* RETRO custom label
* plain white label

4) The contour of the RBL-1 letters in upper left part of cover/insert, which are
* on the same background of the rest of the writing ('excellent stereo'
* on a somehow 'cleaned' background.

As far as I know, custom RETRO lables are always associated with the 'type 2' matrix.
Seems reasonable to assume the the RBL-1 was 'cleaned' in later copies, for visibility reasons before copying the insert / cover.
On the other hand, it's hard to say if the "S-1A + RBL-1" came before or after the simple "S1-A" copies.
Logic would say they came after, since the "S-1A" part of the label is identical and has not been rewritten, but it is also true that it seems a strange idea to add at a later time what seems to be a distinctive sign of the original producer. I saw it on only one copy, so it may have been added by hand.…