This is a post-1980 re-release, as in 1977 Sire was not connected to Warner, neither in UK nor Germany (they were handled by Phonogram/Philips, and shortly by Ariola, afaik, and at least till 78 in France it was Pathé-EMI). Also note the embossed \\' on the back, and the multi-market distribution codes. And "Made by Record Service" was also introduced later, before that it was "Made by WEA Musik GmbH".
I have added the Inner Sleeve and Labels. Interesting to note that this German made record has the UK Cat Number on the label and Rear Cover. The Inner Sleeve has a different Cat Number (SIR K 56647). It was purchased in the UK. Is this an export pressing?