Mordaunt-short System 442 info? Options

[opopanax666]

Hi guys,

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Found these ($45!), sound good, but look terrible on the outside. I'd like to check the x-overs and refurbish the enclosure, but seeing they are of a rather unique design, I don't want to touch them before knowing a bit more on how to disassemble them...
Anybody here have some technical info to share on these babies? Would really be appreciated!

Thanks for any feedback