whats reversed?

With the:
bright white area(no bugs,dirt, crazing after 40 years with bulbs burning away?)

the modern looking font on the PAM CLOCK info area
(a lot of the repro faces have this type font, look at real ones for examples and compare)

the dual logos(why isnt it just Power X graphics? it would have been in the station, no need to identify it as Sinclair)and repros tend to "overdo" it graphics wise to sell the fake product versus the simple original graphics on real items.
Why isnt Sinclair letters red on this one?

I'd bet fake until proven otherwise