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Old 3rd Jul 2019, 11:33 am   #5
MurphyNut
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Join Date: Apr 2016
Location: Croxley Green, Hertfordshire, UK.
Posts: 979
Default Re: Bush SAC 31 (1936) Almost lost forever.

Quote:
Originally Posted by Lloyd 1985 View Post
Just a guess, PIO = Paper In Oil?
Thanks for that, I think you're right, I was wondering why that area was slightly oily. I guess they are still functioning ok as the set is still performing well.....at least at the moment!
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