they don’t have the screw to undo to inject grease into the pedal.
i have a set of x2’s like this as well that i got on a bike i bought used.
my other x2’s have the grease port. everything else (stainless steel axel and pedal body color) is the same.
not sure why some don’t have the port. i e-mailed speedplay to ask (this is going back about 3 years) and never received a reply.