This is NOT a real label. Use this for all unofficial releases (bootlegs, counterfeits, pirate compilations, etc.) that pretend to be a release of Decca.
See also these labels for similar releases (re-releases?):
Mecca, Diamond (4), Master Sound (4), Flora (4) and Beat (9). Sometimes one release features two of these labels, one on the sleeve and one on the CD:
e.g. Decca / Mecca or Master Sound / Flora or Master Sound / Beat ...