Yeah the playfields are the same for Premium ( including Luci ) and the 2 Limited Edition models ( Back in Black and Let There be Rock ) .
The difference , as Toads mentioned , is that Steve Ritchie signs the LE playfields before clearcoating .
If you look there is also a card stapled to the inside of the cabinet on the right hand side ( see pic in post #1 ) . It will also state on that card something like ACDC Premium / LE .
Funnily enough it's actually the opposite for Tron LE's . The playfields and cabinet are labelled as Tron Premium ( of which there was never any made - only Pro or LE ) .