Sorry, MM, I should have been clearer - Polydor isn't a branded label for this release at all, as it only appears on the reproduction (i.e. facsimile) of the original LP back cover, so it is just booklet artwork rather than label branding. Demon I don't think is an actual label either, because its only mention is in the (P) credit for Demon Music Group.
The Polydor is at the top right of the back cover, which is a reproduction of the original Polydor LP back cover, complete with 7-digit catalogue number, and even the original printing credit at the bottom! I would go for AMR Archive as the primary label.