I can't see the picture

But i think i now what where talking about here.
Because im a proud owner of a m82 myself.
First question are you Dutch/nederlands? And where did you got it?
Why i ask this?
Because a m82 without marquee was sold on marktplaats(dutch ebay )for 300 euro i believe

about 2 years ago.
And was resold some time ago by a member of the dutch nes site
www.palrocks.nlIm pretty sure where talking about the same system here,or its a real accidental

case
The old buyer knew the marquee was missing from the system/broken

sadly
So no,this is not normal.
And the seller didn't told you

dont be sad though its still a real rare and cool thing to own! Some of the big collectors dont even have 1.
Maybe you can have a replica made by a glass company ,some internet sites make custum glass lamps and stuff ,try your luck there
Dutch nes gamer