Reminds me of the one for a Phillips stacker set we used to have.
Twin cassete deck, radio tuner and the record deck on top.
Should probably have a pair of hinges that click into the slots on the back.
-Leezer-
Thank you for your input. I'll have a think about what stack systems have been in my possession (not many).
I think it's more likely to be off a stand-alone hi-fi deck. It seems a bit big for a stack system.
I've been looking again and have found the Ariston Q Deck which seems to have a very similar lid. The hinge mount looks the same and sloped front looks close but there are some differences.