That's interesting. Those matrix numbers look the same as my Queen I, which I thought was an early pressing, poss second.
Having a SHA label obviously dates it a fair bit, although without knowing when Q1 started actually selling (was it QII, SHA or ANATO that triggered further pressings?), we don't know which pressing this is (assuming there is a different matrix number for each, which I'm not certain about).
logically, the opportunity for label mixup occurs when both albums are being pressed at once - which I'd suggest was unlikely at the time of the first SHA pressing. Therefore this is likely to be from 1975 (or later) at a point where both Q1 and SHA were being re-pressed, ie after ANATO's success has created a sudden demand.