P Z9202 ED 1 87
I wrote about it on FB
Info/options:
- So far I have only seen the initials on the profi team frame on Panasonic 1986 and 1987.
- if it is Panasonic then there were 3 Eric(k)s competing there in the 1987 season: Breukink, Van Lancker, Vanderaerden and each had correspondingly marked frames (EB,EL,EV).
- there was also Eddy Planckaert, he should have had the marking EP, perhaps it was decided to change this to ED (EP could have been confused with the inaccurately reflected EB), perhaps there was a confusion of markings (letters P and D).
- there is still a possibility that ED was supposed to start for Team Panasonic in 1987, a frame was built for him in the fall of 1986, but for unknown reasons (contract breakup, health problems) he did not race that season.

...And don't put up for sale those "team Motorola" (because there are two) from 1985.... show the manufacturer's markings, they may turn out to be valuable frames without sensational descriptions....

C6162

Other than the dating (spring 1991) I can't write anything certain.
As for 1991 Lotto 1988 paint pattern is a surprise.
Did you make sure it's an SLX?